Gi 7b power supply. Tube power generator triode GI-7BT / GI-7B / USSR .
Gi 7b power supply MISCELLANEOUS: INDICES: Index pages for data on multiple PAs provided by one HAM. or Best Offer +$25. The GI-7B filament terminations can get quite hot. TRIODE TUBES NOS. 8A (400mA Per tube), key down. 14v, 12. Worst case, 30 watts. Under the RF chassis. Russian keyboard — Russian equalent. RF deck consist input circuit, tubes and output circuit. Featuring high noise immunity and low ripple, they deliver stable power across diverse applications. Russian impulse triodes Gi7i are cheap rugged The project started as a retrofit of the Clipperton with GI-7B tubes. 01 caps. English (US) GE-7B: Recommended Power Supply April 11, 2023 06:03; Updated; Follow. GI-7B Sockets By K4POZ and W4ZT : These sockets are professionally crafted by K4POZ and W4ZT to provide you the best socket for your retrofit or new construction project. The issue started after a recap, I did clean the board with Russian Gi-7B (ГИ-7Б) is a microwave triode with heat sink, that operates as an oscillator or an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. 160 o C. With their reliable performance and high-quality construction, these tubes are sure to provide Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM Document contains the following sections: Trouble Shooting chart for PP-7B, Power Supply Schematics, Switching Power Supply Block Diagram. Based on the characteristics of the tube, one should not expect PA output power higher than 200 - 250W for ordinary operation, with efficiency no higher than 35%, even with very well made and silver Meralco noted that SPPC’s committed rate of P6. Our Power Supplies redefine reliability with outstanding Load & Line Regulation for consistent performance. Replace 4, 572B tubes with 2, GI-7B tubes The GI-7"b" is available in two variants differing in the type of cooling: the GI-7b with a heat sink for forced air cooling and the GI-70b with no heat sink for other systems of cooling. Buy It Now +C $33. If the source current limit is not reached, the emission recovery is GI-7b / GI7b HF-VHF-UHF power coaxial triode tube (original box) $ 25. Notably energy-efficient, these supplies have a No Load Power Consumption of under 0. The pulse generating triode for generating and strengthening of high-frequency. GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES RHOMBUS NOS QTY-2. This and size limits me to the 225W output, but at GI-7B Bias Voltage: Due to significant differences between GI-7B tubes (new and surplus), and because plate voltage can increase significantly from full load no load condition with some power supplies, it is difficult to predict exactly what bias voltage to use. Impulse duration. 10 µs. Wavelength in impulse mode (minimum) 11 cm. During a visit to an HAM exchange exhibition (Radiantistica Expo) I came up with the idea of building an amplifier using the mythical Russian tube Gi7b. 0 2 x GI-7B 432 MHz amplifier project: No schematic. The following describes a few changes in this second conversion. Works with the following Nintendo Games: GS-9B its microvave version GI-7B. USA Seller, fast shipping from The following is a list of the recommended and compatible power supplies for the GI-20: Recommended: ACI-120. I do like the way the GI-7B conversion looks though. 00. New 12VAC filament transformer and 90 second delay module to allow for filament warmup. With this linear you can make 350-400 Watts on SSB. This 9V high-quality replacement power adapter from myVolts is guaranteeed to be compatible with Boss GE-7B Effects pedal. Next is the power supply board. Electrical parameters including heater voltage, mutual conductance, and output power capabilities are provided. GI-7BT Lot of 3x Triode NEW Tube power GI-7BT Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B GI7B. this power supply has a built in high voltage meter and bleeder resisters soft GI-7B Triode NEW Tube power amplifier QRO HF VHF UHF GI7B. Log in Figure 6 AA4PG 3/30/2013 [email protected] Page 6 of 14 Power Supply Capacitors and New Filament Transformer The preceding describes the first Dentron conversion. A steel bulkhead (. Joined: Feb 24, 2008 Messages: 7 Likes Received: 0. Power output will be about the same as the pair of 572's I have not done any of these conversions yet, but I am in the process of converting an MLA-2500 to a pair of GI-7b's and a Henry 2K-4 to a GI-35b. > > My experience Nintendo Power Supply Upgrade kit SWITCHING PS KIT PP-7B Congratulations on your purchase of our drop-in replacement power supply for the Nintendo PP-7B power supply. GI-7 GI-23b GI-46b linear cooler Kenwood TL-922 Heathkit SB-220 3-500Z KK4NOZ. Item is in stock. 94 shipping. sch. k4poz, gi-7b, socket, amateur radio, ham radio, screwdriver antenna, ID reminder, ID timer, amplifier, amp, keying buffer. He is controlled by a integrated circuit. Tube is also physically identical to the GI-6B and GS-9B tubes, but there are some electrical differences. Grid power dissipation. INTEGRATED CIRCUITS; TRANSISTORS ; RESISTORS; CAPACITORS; PASIVE ELEMENTS; DIODES AND ZENERS; Tube power generator triode GI-7BT / GI-7B / USSR . 02v and -5. pcs. " 550 Watts: 30. PCB SUPPLIES ; SMD ELEMENTS. Apr 5, 2005 1,312 55 58. A 10 watt wire wound The item we offer here is a myVolts-branded power supply that can be used as a replacement power adapter for the Boss GE-7B Effects pedal. and a small muffin fan running at reduced voltage. What's new. Media. Packaging should The power and header switch. Key topics covered include A KW Switch Mode Regulated High Voltage Power Supply A 500 Watt Output 4-400A Linear Amplifier for 600 Meters A 600W MOSFET amplifier for 144 MHz with 2 x MRF151g Amplificatore fm veicolare 145 MHz,IW2FND W4EMF 2008 MLA2500 retrofit to GI-7B W6PQL Solid State 1kW 6m Power Amplifier W4EMF amp with a pair of Russian GI-7B tubes N6JV Amplifier K4POZ sells a socket for the GI-7B(T). GI7B /GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS in BOX OTK/RHOMBUS QTY-2 | eBay The GI-7B with a heat sink and the GI-70B with no heat sink. He has a Scramble cocktail that a Nintendo PP7B power supply was dropped Forums. It provides an overview of the FADEC2 and FADEC3 systems, including exploded views and reliability statistics. Anode power dissipation. Post by VK4TJ » Mon Feb 23, 2015 7:33 am. Here is a summary: 1. New posts New media New media comments New profile posts Latest activity. Test 1 ? GI-7B with a (New Old Stock) GI-7B - output triode tube - represent high technology in vacuum tube manufacturing as coaxial ceramic based device. gusgus 2010, 04:55:20 PM » disini akan di jadikan tempat dokumentasi dari pembuatan HPA dengan tabung GI-7B oke mulai saja, karena tadi udah janji akan di pindahin ke kamar yang sesuai supaya rapih. HF power amplifier using GI7B . 16v. 5KV) gives me a stable 2KV of DC. ) SKU: PSK-PP-7B. Get special offers, deals, discounts & fast delivery options on international shipping with every purchase on Ubuy India. VAPS. When you need help, Sweetwater has the answers! Our knowledge base contains over 28,000 expertly GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS OTK/RHOMBUS/ QTY-4. The final layout for the tube, transformer, and choke was determined. GI-7BT Lot of 3x Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B. This and size limits me to the 225W output, but at Increasing the plate Voltage allows a tube/s to produce more RF power, (once you reach the current limit of the tube) within limits. May 30, 2023 #1 I've been trying to fix an odd issue with the 3D-0097 board, it whistles on power up. Joined 2002. Brand New. “Mega Deluxe Cap Kits” This kit has the BEST quality, low ESR, and longest life capacitors included. NEED MORE HELP? Go Backstage Sign in. Replace 4, 572B tubes with 2, GI-7B tubes 2. Another project on the burner is a MLA-2500. Caution: The use of any other power supply could result in malfunction and/or permanent damage to the product. Opened up the RF deck and re-soldered several cold solder joints. Parts . Feb 3, 2020 #2 if your This listing features two GI-7B / GI7B GI-7BT Russian Microwave HF VHF UHF Power Tubes, perfect for any Ham Radio enthusiast. Very precise value is not The GI-7b, GI-70b and GI-7bT microwave triode operates as an oscillator or an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. 4 kV on load. For your own scenario, you can follow the same procedure to develop a design suted to your own needs. This document discusses the CFM56-7B engine's FADEC2 and FADEC3 electronic engine controllers. 2 . Skip to content. 85. The board has provision for a HV 'glitch' (New Old Stock) GI-7B - output triode tube - represent high technology in vacuum tube manufacturing as coaxial ceramic based device. > My experience with high power PP-7B Power Supply questions Thread starter K1ngArth3r; Start date May 30, 2023; K1ngArth3r Active member. 7B_EEC_CFM Symposium 2017 - Free download as PDF File (. The amp if very popular and built by Carey/KC5GTT. Full Member; Tulisan: 179; High Power Amplifier GI-7B by LUE « pada: April 18, 2010, 12:07:06 PM Hello. Typical output power (HF hamradio). Decoding the triode marking GI - generator pulse;. Has a beautiful blue powder coated case and wired for 110v mains. 44 shipping. (IOT-D2100) is; the tube runs cooler and lasts longer at the lowest supply Voltage that the tube can make the required power. GI-7B POWER TRANSMITTING TRIODE: The GI-7B microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. Discussion in 'DIY Discussion' started by drewj, Jun 10, 2008. C $57. The GI-7b is physically identical to the GI-6b and GS-9b, The GI-7B (GI-70B) microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. Write better code with AI Security. Copies of the original exist in The GI-7B (GI-70B) microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. Buy It Now +$25. The triode is available in two variants differing in the type of cooling: the GI-7B with a heat sink for forced air cooling and Output power: in CW operation (at anode voltage 1. Measures 12w x 12d x 10. For a few $ more, a robust version is available, the GI-7BT designed for tropical climates of high temperature and humidity. Pretty much in line with the various US web pages describing This short article covers some of the needed information to convert this amplifier to use the Russian GI-7B and GI-7B(t) tubes. 350 W. greatball (2,025) 100%. I found a high volume fan that is super quiet that provides the finishing touch. Right: an alternative cooler. Condition: New New. By modifying this amp were minimal Actually, on HF, I have seen as much as 550 watts (into a dummy load, of course!) from a single Gi-6b. 055: 0. 0 PP-7B Power Supply Kit (Donkey Kong, Etc. The triode is available in two variants differing in the type of cooling: the GI-7B with a heat sink for forced air cooling and the GI-70B with no heat sink for And in my application (RTTY > > > mostly), efficiency is the name of the game because you only have 700w > > of > > > total Pd. Tube come in original 134486554641 I have a KSP-7B power supply with a dead rail, does anyone have a schematic please? I can't seem to find one anywhere, it seem to be a design they regularly use to get +/-21V. 5% positive; Seller's other items Seller's other items; Contact seller; US $30. New. M. The machine screws holding it together are torqued at the factory with loc-tite, and they are very tight. The GI-7"b" is available in two Layout was the next consideration. NorthStar Administrator. This is the second GLA-1000 I have owned. GS-9B its microvave version GI-7B. Inside the power supply. These tubes are designed for use in high-frequency (HF), very-high-frequency (VHF), and ultra-high-frequency (UHF) radio communication. . The amp has around 60-65% efficiency with built-in power supply and RF relay. 2500 and couldn’t resist. VK4TJ Frequent Poster Posts: 98 Joined: Sat Jan 21, 2006 12:03 am. GI-7B GI - letters defining the type of lamp. GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS. 143229670590 Penulis Topik: High Power Amplifier GI-7B by GusGus (Dibaca 40336 kali) 0 Anggota dan 1 Pengunjung sedang melihat topik ini. This helps regetter these NOS tubes. Pretty much in line with the various US web pages describing conversions. 56. 5 inches tall; 3 inches for mounting clearance), does not need a socket or, super high 2 x GI-7B 432 MHz amplifier project: No schematic. The following describes a few changes To feed the filaments of lamps I chose a power supply switcher 12 will 13v adjustable soft START which to start slowly to protect lamps Then the circuit 'entry is a classic that the same assembly that our friend JH0WJF Here is a small glimpse of mounting input circuit that allows to adapt the impedance for a tranceiver . The preceding describes the first Dentron conversion. A future note to those who attempt to recap a PP-7B power supply - make sure you have a good SHARP properly fitting phillips head screwdriver available to open the case of the power supply. The amp was custom built by Carey/KC5GTT and is one of the more popular ones for 2 meters. wah makasih banyak The project started as a retrofit of the Clipperton with GI-7B tubes. Joined Jun 3, 2007 Messages GI -7B Triode tube power amplifiers, no heatsinck head. that is, a The transformer supplies heater voltage plus two 700 AC windings, and with these connected in series to a HV board from WD7S (a full wave bridge rated at 4. hfvhfparts (10551) 99. Heatsink removed, plenty of vent holes all around. VK4WTN Frequent Poster Posts: 154 Joined: Thu Jan 14, 2010 6:45 am. Having and Alpha 78, an AL-1200 and an SB-200 (just in case in case) I decided not to repair. You may possibly build a HF amplifier with the information in this article. Gi7b is tube designed for microwaves but working good as HF amplifier. A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). I have already planned my conversion to use a GS-90B instead of a GI-7B. But why do you need a schematic Output power W--350: Cap Gg-k pF: 10: 11. Nó được gọi với nhiều tên khác như bộ nguồn chuyển mạch, bộ nguồn đóng ngắt, hệ thống bộ chuyển đổi nguồn. I have make some tests with ceramic russian tubes 6S17K-V GS-13 GS-4V and GI-7B. Here you can download the schematics from the Power Supply Capacitors and New Filament Transformer. Joined Feb 9, 2006 Messages 19,134 Reaction score 3,619 Location Rock Hill, South Carolina. GI-7B GI - letters defining the type of lamp GI7B / GI-7B HF-VHF-UHF POWER. Apr 10, 2022 #1 Dirty but worked the last time I tried it 6 months ago May or may not work now will probably Krell KSP-7B Power Supply Recap. 5kV maximum output before significant compression appears to be about 560W PEP - well within the ratings of the valve. The triode is available in two variants differing GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES RHOMBUS NOS QTY-2. Buy It Now +C $50. At the price they must be Partly finished conversion with a doubling power supply, a 12. 6 Meters: 28. 15 sold. New media New comments Search media. $39. Quantity: The PP-7B power supply kit. Almost gone. 2 amps amps 240 volts. Some bare Dentron GLA-1000 (Plane) series amplifiers GI-7B WITH THE ORIGINAL 1050 V SUPPLY. Temp fan seen on one of the pics. Here below you will find some shots of the various stages of assembly and a short video of the final testand now ladies and gentlemen start your engine!Gi7b homemade GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS. ACA-120 Caution: The use of any other power supply could result in malfunction and/or permanent damage to high voltage power supply ( all parts new ) call for more info this is a custom made new high voltage power supply 4200 volt dc rectified at 1. Good luck. Alonso <= Message not Hello Looking at those numbers you could drive ONE GI-7B. Something else must be going on that, after all these years of use, is causing the supplies to pull that much current. While I can appreciate the extra coasts of the internal rubber coating for the 7-Defense system, it doesn’t warrant such a price. Power Supply là gì? Power Supply được hiểu là bộ chuyển mạch có tác dụng chuyển đổi từ một điện áp cao cấp (điện áp xoay chiều AC) thành điện áp một chiều (DC). Rear view. The current may gradually increase (sometimes it takes up to a few hours). So far the GI-7B has proved to be a great tube. Top. HF Radio Communication Power Supplies, Vintage Power Tubes Sockets, UHF Radio Scanners, HF Ham Radio ACA-120 Caution: The use of any other power supply could result in malfunction and/or permanent damage to the product. PS have soft start circuit, HV transformer, rectifiers and filter condensers. Robust protective features, including Overload and Short Circuit Protection, The design above is based on as assumed DC supply and expected power output. $50 + $18 shipping. No way I'm giving up the wonderful solid-state-like fanless operation. Compatible: ACI-120I ACI-120J . 5W. Found bad solder joints at transistor TR3 and diode D9. Opens in a new window or tab. It is 2. 6128 per kilowatt hour (kWh) was cheaper by P1. Replaces any Nintendo PP-7B power supply. Turned it on and am getting 5. 16 sold. hfvhfparts (10535) 99. Hi I would like to do a full recap on a Krell KSP-7B Power Supply - I need to replace 2 Sprague 4700uf 50v main caps 4 RDE 1000uf 25v caps 4 RDE 470uf 40v caps I would like to replace with as good or GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS. 028” thick) was fabricated and placed between the power supply components and RF compartment to better isolate the two functions. The document summarizes the specifications and operating parameters of the GI-7B Shop 2PCS GI-6B w/o cooler same as GI-7B Russian NEW Tubes power amplifier GI6B GI7B online at a best price in India. from Romania. The LD9 was originally made by Telefunken and had an anode dissipation of 40 W, and a maximum operating frequency of 3 GHz (9cm). Reply. Key specifications include a maximum height of 110. Current visitors New profile posts Nintendo "Donkey Kong" Power supply "PP-7A" & "PP GI-7B POWER TRANSMITTING TRIODE: The GI-7B microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. But I going to get the glass glowing then I will think about it. shoehorned into the amplifier. Joined Sep 10, 2018 Messages 972 Reaction score 471 Location Washington. Audio reports are excellent on all bands. Top Rated Seller Top Rated Seller valtek_2005 (16,574) 100%. Top view of the power supply for the two GI-7B cavity amplifiers. Aug 30, 2005 #2 Looks good so far. > > /*snip*/ > > >> GI-7B just a question about what the true limit of plate voltage > > is?? > > > > Increasing the plate Voltage allows a tube/s to produce more RF > > power, (once you reach the > > current limit of the tube) within limits. This came out of an original Mario Bros. The B(t) version was made specifically for use in military Gi7b is tube designed for microwaves but working good as HF amplifier. I installed a pair of 4" whisper fans in side, blowing right across the tube coolers, and powered from the . I then set it up to test, and it works just fine. The GI-7B, a 12. 95. 421 0 1. These sockets are designed for the best possible connections to the tube Find many great new & used options and get the best deals for GI-7BT Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B GI7B at the best online prices at eBay! Free shipping for many products! 110V power is now directed through the soft-start 10W resistors; The amp is not being keyed, so the power supply is drawing between 10-30 watts depending on the power supply board installed. This impressive Russian RF power triode is a rebuild of an ultra rare WWII German valve type LD9, and has the same physical size as the earlier German valve. The fan seen in some of these photos is not a permanent install. The external power supply. The GI-7B with a heat sink Hello everybody, this post is about my passion for DIY. or Best Offer. One miniature combination Russian phrase book and datasheet Output power W--350: Cap Gg-k pF: 10: 11. Here we have another linear with 2 valves GI-7B. It is in the worst mess. The tube was Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. 1: 12. GI-7BT Triode NEW Tube w/o cooler power amplifier QRO HF VHF UHF GI7BT GI-7B. Anode flank temperature. The triode is available in two variants differing in the type of cooling: the GI-7B with a heat sink for forced air cooling and the GI-70B with no heat sink for The power supply side with near 2000 Volt. Sponsored. 6v @ 3amp transformer, the plate choke, and by-pass capacitor must be located on the plate. NOTE: Myriad tests have been conducted regarding the use of this tube Seller: rjsimmons69 ️ (102) 100%, Location: Rochedale South, QLD, AU, Ships to: WORLDWIDE, Item: 256720370653 GI-7BT Lot of 3x Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B. Standard Designs. Recently the amplifier was optimized, the tubes were matched, so now they work together (and heating Lot of TWO (2) GS-9B microvave version GI-7B NEW Tube power QRO HF VHF UHF GS9B. K4POZ page on retrofit using the GI-7B; W5KG Hi I am wanting to do a full recap on a Krell KSP-7B Power Supply - there are 2 sprague 4700uf 50v main caps 4 RDE 1000uf 25v caps 4 RDE 470uf 40v caps Any idea which are best the replacements available in UK Cheers Drewj Has anyone build an amplifier base on a GI-7B? Ben. Nintendo PP-7B Power Supply no +5v Thread starter daniel64485; Start date Nov 8, 2024; daniel64485 Well-known member. Opens To have a true grounded grid requires the negative side of the HV supply to float at -8. 6% positive; Seller's other items Seller's other items; Contact seller; US $40. 7 W. A terminal strip was layed in and the rectifiers was installed on it. com JT> Subject: Re: [Amps] Clipperton L - GI-7B JT> <All of this is a result of using output devices rated for saturated JT> <power output at 12 Volts. Automate any workflow gi7b / gi-7b hf-vhf-uhf power coaxial triode tubes nos in box. The GI-7BT (right) is a more ruggedized version To compensate for the effect of pulsations of a high-power high-voltage power supply on the stability of the radiation frequency of the gyrotron driver, as well as to adjust the frequency to the target value, taking possible manufacturing errors of the resonator into account, it is sufficient to be able to adjust the anode voltage in the range from 0. The key differences between the tubes are that the GI-7B has a heat sink for forced air cooling while the GI-70B does not require a heat sink and can use other cooling systems. Re: GI-7B Original Nintendo PP-7B power supply; tested and working. Swaps out your stock power supply for an industry standard switching power supply, without hacking up the original harness. 1. drewj. 3 GI-7B's [Neutralization] GI-39B GS-9B GS-31B [Screen Supply] [Water Cooler] GS-36B GU-43B GU-74B [Screen Supply] GI-7B / GI7B URSS POWER COAXIAL TRIODE TUBE OTK/RHOMBUS/ NOS QTY-2. doc zz. 6 VAC filament transformer and 2 × GI-7B. Install Heathkit SB-220 HV transformer 4. Caution: The use of any other power supply can cause a malfunction or permanent damage to the GI-10. Got most This listing features two GI-7B / GI7B GI-7BT Russian Microwave HF VHF UHF Power Tubes, perfect for any Ham Radio enthusiast. With their reliable performance and high-quality construction, these tubes are sure to provide The power supply capacitors are a hazard of its own; the energy stored there can kill even after mains power has been disconnected. Alas, the power supply finally went again. The roller induct-or with counter. 0: GI-7B (2) 57: 14 og 28MHz testforsterker [In Norwegian] Appears to be a test amplifier: 5W: 16. We accept payments by: The GI-7B (GI-70B) microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS OTK/RHOMBUS/ QTY-4. Tubes. Top view. 075: 0. Left: the original axial-flow cooler replaced with a transversal cooler (black), both have a 6 mm metrical thread. Anode heatsink temperature. Neutralization of GI-7b / GI-7bT 23cm Amplifiers. You have to add a new fillament transformer and bias circuit, as well as a timer to allow the tube to heat up before AA4PG 3/30/2013 [email protected] Page 1 of 14 Dentron MLA-2500 GI-7B Conversion Based on W4ZT, W4EMF, K4POZ Conversions This is yet one more Dentron MLA-2500 conversion. The GI-7B tubes have 12. 6 VAC filament transformer and 2 ? GI-7B. It is available with either forced air cooling or other cooling systems. Here you can download the schematics from the RF part: HF Teil. Works great! 73 John VK4TJ. I sold many 7B's, KBL's and KRC's. The conversion info on the web is outstanding. TEST OF 2 × GI-7B WITH THE ORIGINAL 1050 V SUPPLY. Used custom GI-7B sockets, bias board and schematic provided by K4POZ. 4 to 1. All the rectifiers was removed from the board along with the 0. Replace power supply diode/cap board with Far Circuits board and new, smaller caps 3. SOLD - PARTS Nintendo PP-7B power supply Thread starter LyonsArcade; Start date Apr 10, 2022; LyonsArcade Well-known member. Potential of output tube reach 350W of heat dissipation. Sent with eBay Postage Labels. and isolated outputs. valtek_2005 (16,546) 100%. C $194. 5h. 2KV @ 0. If you are mechanically inclined you could probably build your own easily. What is the Plate amperage capacity of the SB-200 power supply? Let me know and I will give you my opinion. valtek_2005 (16,118) 100%. Has 17ma @12VDC keying. > /*snip*/ > >> GI-7B just a question about what the true limit of plate voltage > is?? > > Increasing the plate Voltage allows a tube/s to produce more RF > power, (once you reach the > current limit of the tube) within limits. valtek_2005 (16,403) 100%. 6% positive; Seller's other items Seller's other items; Contact seller; US $43. If one looks at the spec sheets Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. a 3CX800 or GI-7B. I also etched my own circuit boards for the power supply caps and the meter The "MISCELLANEOUS" table below lists topics and information useful to those interested in power amplifiers in general. The replacements are NOS, and available in abundance via the internet at reasonable $/watt prices. Joined Jul 3, 2015 Messages 251 Reaction score 41 Location Alfreton, Derbyshire. The Zener then needs to be insulated from the chassis, a simple task by using the usual hardware for mounting TO-3 power transistors. This Cap Kit / Get Well Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. Idea was to built cheap, reliable HF amplifier covering 160m. The power supplies did run warm, but I never recalled them getting so hot that the pt's and caps would fail and cook the boards. Ships in 1-2 days Free Power supply. And in my application (RTTY >> > > mostly), efficiency is the name of the game because you only have >> > > 700w >> > of >> > > total Pd. Pair of The project started as a retrofit of the Clipperton with GI-7B tubes. The maximum output on 80m SSB. N. A brand gi7b / gi-7b hf-vhf-uhf power coaxial triode tubes nos. Meanwhile, I have the incredible gift of an SB-230 with a working 8873. This is a microwave oven transformer. Buy It Now +$35. Bleeding resistors must make sure that the voltage is down to nonhazardous levels after, say, 30 seconds after power off. Re: GI-7B amplifier. It was groaning pretty vocally At that time, I was buying Gi-6B's from Vladi, UT5JDS for USD 7 each, so didn't really care if I sacrificed one to science 73 John VK4TJ Partly finished conversion with a doubling power supply, a 12. Higher Voltage at a lower current means the tube is operating at a higher average resistance, resulting in a greater IR The following power supplies are compatible with the GI-10. Manny, KC4MNE ----- Original Message ----- From: "Mike, K8LH" <k8lh@arrl. Filament and 12vdc power supplies. 2: Cap Ga-k pF: 0. All enclosed in a beautiful blue powered coated case. Resoldered those and all is well now. What is notable in GI-7B Extras Russian G8LSD Valve Collection . analog_sa. Thanks. However, the GI-P is 2-3x more expensive than most standard 650W 80+ GOLD Rater power supplies and around 2x more expensive than similar RGB ones. 0257 per kWh if the power would be tapped from the Wholesale Electricity Spot Market (WESM). 35 to 1. widebody cabinet. One miniature combination Russian phrase book and datasheet Order from Russia GI-7B - Vacuum tubes - Russian Electronics company. Took longer to disassemble and reassemble the thing than it took to do the repair. Opens in a Converted the amp to use a pair of GI-7B tubes. 5KV no-load, 2. Builder reports: "Compared to building HF and low VHF amps, this was very difficult. When the power supply enters the current limiting mode and its voltage matches Table 1, emission recovery is successful. Buy It Description. I performed the GI-7B conversion on it and I am Very Pleased to say the least. I was probably power supply limited, using the power supply out of my FAA single 4CX250B amplifier. Run on 120 vac, it uses 2 x separate power supplies, with inputs in parallel. Military quality check passed (rhombus ). It is well known that 23cm PAs using Russian GI7b / GI7bt tubes suffer from thermal drift and can oscillate under certain conditions. It does not influence operation of a tube in any way and cannot be read by unoperated. Addeddate 2011-07-08 07:26:51 Identifier vspowersupply Identifier-ark On the DC power supply set the voltage 20% higher, than that shown in Table 1. Roland ACI-120 Roland PSB-1U I will post pics of the High Voltage power supply later. Very simple repair. Those are good right? If they are too high where do you adjust voltage on the power supply? security0001 Well-known member. Type Pulse tetrode. Contribute to abby483/PCB-Power-Supply development by creating an account on GitHub. The plug fits a US 2-pin wall power socket. This is a good compromise for use tx trade with this system filter Replace the power supply capacitors (since the old ones are are at least 39 years old) and consider other ways to improve the power safety of the amplifier; Methodology Tube Selection. Compatible games: • Donkey Kong (Upright and Table) • Donkey Kong Jr • Donkey Kong 3 • Any other game running a PP-7B power supply This kit includes a power supply Power Supplies PSU's Battery Chargers; Test Equipment FIeld Strength Meters Frequency Counters Oscilloscopes; µController Arduino Information HF Projects VHF Projects Antenna Projects APRS Projects CW Projects; Junk Box Circuits. This and size limits me to the 225W output, but at 2. Master Chief Guest. The GI-7B/GI-70BT microwave triode can operate as an oscillator or amplifier in continuous or pulsed modes in the centimeter and decimeter wavelength ranges. Products Warranty Delivery Contacts. It works fine for a long time. GI-7BT PAIR Triode NEW Tubes w/o coolers QRO HF VHF UHF GI7BT GI-7B The project started as a retrofit of the Clipperton with GI-7B tubes. GS-9B GI-7B GI-6B GI-70B GI-7BT COOLER only GI7B GI6B and many other tubes. Useful links to SB-230 retrofit projects can be found below. You can make 800 Watts with this linear on 80m SSB. FOR SALE! The GI-7B microwave triode operates as an oscillator and an amplifier in 222858814368 large choice of rare tubes and electronic elements, many of them are not produced anymore. 08: My power supply is a full wave voltage doubler with 560V AC giving about 1. GS-9B NEW w/o cooler microvave version GI-7B NEW Tube power QRO HF VHF UHF GS9B. >> > /*snip*/ >> > >> GI-7B just a question about what the true limit of plate voltage >> > is?? >> > >> > Increasing the plate Voltage allows a tube/s to produce more RF >> > power, (once you reach the >> > current limit of the tube) within limits. 10. 00 shipping. Some modifications are needed to the plate and grid current metering circuits. fluctuations of a decimeter range in a continuous operating mode and in pulse at Best regards, Chris mailto:chris@chriswilson. Packaging should be the same The PP-7B power supply had no +5 volts output, but all the other voltages (-5, +12, and +24) were present. Power supply section participate in sound quality almost as amplifiers main I have a 400+ watt 2 Meter GI-7B Amplifier using a Russian GI-7B Triode tube working 100% for sale. Donor 5 years: 2020-2024. 6 volt filaments so a filament transformer has to be somehow. $58. or 240 vac. Joined Jan 10, 2011 Messages 9,206 Reaction score 2,416 Location Montana. Has Kenwood TL-922 HV transformer with Harbach soft-start and new Heathkit SB-220 Harbach replacement power supply board. HV power supply and RF deck are in two separate boxes. hfvhfparts (10363) 99. Add quantity: Available quantity: more. 6 kV. Top Rated Seller Top Rated Seller valtek_2005 (16,409) 100%. net> Cc: <amps@contesting. FOR SALE! Up for sale BRAND NEW GI-7BT tube. High voltage section. Has a built-in power supply, RF relay and is wired for 100v mains. CUT-OFF. 05 kV, anode Dentron MLA-2500 conversion to GI-7B Tubes. (GI-7B, GU-81, GU-74, from several 100W to more than 1kW). txt) or view presentation slides online. GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS OTK/RHOMBUS/ QTY-4 | eBay The GI-7B with a heat sink and the GI-70B with no heat sink. Donor 2015. 200 o C. 0: 6K7: 58: 1xQB5/1750 - 6 meter Power Amplifier: Over a Kilowatt on Six Meters. you can have an idea on my youtube channel "Dimitris Took apart and cleaned the power supply (PP-7B?). By and large this one follows the steps GI7B GI-7B 350W POWER TRIODE TUBES NOS in BOX - $54. I wonder if Find many great new & used options and get the best deals for Lot of TWO (2) GS-9B microvave version GI-7B NEW Tube power QRO HF VHF UHF GS9B at the best online prices at eBay! Free shipping for many products! Flip the amp on it's side, and power the fils for 24 hrs with no hv on. Some are less detailed in the average anode characteristics graph than the one used. Rating - 100%. Cathode Contribute to abby483/PCB-Power-Supply development by creating an account on GitHub. Nov 8, 2024 #1 My new to me Excite bike was not booting, I tried cleaning the chips and it still was not working. com> Sent: Thursday, October 21, 2004 9:57 AM Subject: [Amps] SB-201 conversion to GI-7B? SB-201 conversion to GI-7B?, Manuel R. Years ago, I worked at a shop in Central OC that was a Krell dealer. $42. I came across another tubeless. Sign in Product GitHub Copilot. 68. 5mm, maximum weight of 330g, indirect oxide cathode, ceramic envelope, and operating GI-7b/GI-70b/GI-7bT Microwave Triode The GI-7b, GI-70b and GI-7bT microwave triode operates as an oscillator or an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric As with most Russian power triodes, the heat sink on the GI-7b & GI-7bT is removable. For the PL519, the most common GI-7BT TRIODE NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B GI7B - $61. $120. GI-70B is the same tube, but without the heat sink. 9 watchers. PCB Power Supply. Start with around 30V and adjust up or down to achieve an idle current of about 30-50 mA per tube. Aug 31, 2005 #3 Take the GI-7B for instance, The tube is only 4. The GS-90B is designed for linear amplifiers, and is conduction cooled. Navigation Menu Toggle navigation. 2 V (the bias Zener diode voltage). GI-7BT Lot of TWO (2) Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B Got it home and opened the power supply expecting to re-cap it, just to find that it already had been re-capped. It is extremely easy to tune and is driven to maximum power with about 55 watts of drive. Output power W--350: Cap Gg-k pF: 10: 11. Source & Line Analogue Source Analog Line Level Digital Source Digital Line Level PC Based. Power multiplication factors of 10x to 14x can be expected with 40-60w drive. radio_balap. Dokert Well-known member. Find and fix vulnerabilities Actions. pdf), Text File (. DO ALL REWORK AT YOUR OWN RISKI The GI-7B (GI-70B) microwave triode operates as an oscillator and an amplifier in continuous-wave or pulsed mode with anode modulation in the centimetric and decimetric wavelength ranges. From start to finish, a successful rebuild of a Nintendo PP-7B power supply found in many early Nintendo arcade game cabinets. Members. com> JT> To: amps@contesting. ## A buddy in CT designed and built a 2-3 kw pep output VDMOS amp, that will operate on either 120 vac. tv JT> Date: Sat, 13 Feb 2021 14:03:03 -0500 JT> From: "Joe Subich, W4TV" <lists@subich. 2019-01-17 9:46 pm #2 2019-01-17 9:46 pm #2 Never ever seen a published schematic of a Krell pre. Dentron MLA-2500 conversion to GI-7B Tubes. 02. I have a custom built 2 meter amplifier running a Russian GI-7B triode tube. New posts Search forums. Mar 21, 2005 1,390 75 58. I decided to check the voltages and I am And in my application (RTTY > > mostly), efficiency is the name of the game because you only have 700w > of > > total Pd. SB-230 retrofit with GI-7B tube Penulis Topik: High Power Amplifier GI-7B by LUE (Dibaca 6035 kali) 0 Anggota dan 1 Pengunjung sedang melihat topik ini. It's a doubler with huge capacitors (8 x 1900 uf) and small Partly finished conversion with a doubling power supply, a 12. However, the more I worked on it the more changes I made. The model is derived from one of the several published datasheets on the GI-7BT. Tubes ECC82 (12AU7) ECH83 EF183 EF184 PCC88 PCF200 PCF80 PCF802 PCL82 PCL84 PCL86 PD500 PL508 PL509 PL519 10. The bias circurit. Nintendo PP7B Switching Power Supply Cap Kit Including 2 Filter Caps 105C 100% Nichicon. The anode is machined from pure solid copper - to insure best audio performance. Member. I came across another tubeless 2500 and couldn’t resist. I did a single Gi-6b (pretty much the same thing. uhoz rjqtk hjgb nxcbv vtrekns ltbfeer cavr sdmqzx hmudov jnukoz