Gi 7b power supply. Military grade and N.

Gi 7b power supply I have make some tests with ceramic russian tubes 6S17K-V GS-13 GS-4V and GI-7B. 2 V a simple task by using the usual hardware for mounting TO-3 power transistors. Replace power supply diode/cap board with Far Circuits board and new, smaller caps 3. 16 sold. 5 inches tall; 3 inches for mounting clearance), The form of the GI-7B triode lamp with an additional radiator (a); (b), the anode-grid characteristic of the GI-7B lamp, obtained experimentally. Buy It Now +C $33. O. 5cm), W, at least 30 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. Apr 5, 2005 1,312 55 58. It works fine for a long time. $120. This Cap Kit / Get Well Kit has been built to fit original cap size, and lead spacing on the larger caps so the install is a great fit and your caps sit on the PCB properly. 5kV maximum output before significant compression appears to be about 560W PEP - well Got it home and opened the power supply expecting to re-cap it, just to find that it already had been re-capped. Our Power Supplies redefine reliability with outstanding Load & Line Regulation for consistent performance. Has Kenwood TL-922 HV transformer with Harbach soft-start and new Heathkit SB-220 Harbach replacement power supply board. Title: GI7B GI70B Author: Electronintorg Subject: JA-2003-01-16 Created Date: 12/14/2002 7:52:05 PM I have a 400+ watt 2 Meter GI-7B Amplifier using a Russian GI-7B Triode tube working 100% for sale. The thest performed showed that no ano. Brand Krell KSP-7B Power Supply Recap. With this linear you can make 350-400 Watts on SSB. Nintendo PP7B Switching Power Supply Cap Kit Including 2 Filter Caps 105C 100% Nichicon. The blue colour marks the details. and I happen to have an Amp Supply Co. Power Supply Capacitors and New Filament Transformer. My effort is no different, and it works. This has nothing to do with the Disney movies, i decided on Piglet as I consider the amp to be the daughter of my GS35b amplifier that acquired the name 'The Pig', the reasons for that can be found elsewhere on my web site. Joined 2002. 05 kV, anode current 300mA, wavelength 18. There is heaps of info on the internet about them. 6 VAC filament transformer and 2 × GI-7B. But I going to get the glass glowing then I will think about it. HF Radio Communication Power Supplies, Vintage Power Tubes Sockets, UHF Radio Scanners, HF Ham Radio Receivers, HF CB Radios, The project started as a retrofit of the Clipperton with GI-7B tubes. you can have an idea on my youtube channel "Dimitris Bel" YouTube Took apart and cleaned the power supply (PP-7B?). It's a doubler with huge capacitors (8 x 1900 uf) and small An RF-negative-feedback voltage will be developed across R when the GI-7B amplifies RF and reduces the driving voltage developed at the cathode. Roland ACI-120 Roland PSB-1U 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 This amplifier had been converted at some point in time by Lawson Summerrow, W4EMF to GI-7B’s. Here we have another linear with 2 valves GI-7B. You can make 800 Watts with this linear on 80m SSB. (MKP) in HV for GI-7B output tube - regulated power supply for all stages (for the output stage as well) - automatic bias current control for the output tube with long term The most common tube used for replacing the 8873 in this amplifier is the Russian GI-7B, a VHF power tube originally used in Russian RADARS. The amp was custom built by Carey/KC5GTT and is one of the more popular ones for 2 meters. Silahkan masuk atau mendaftar. 14v, 12. The document summarizes the specifications and operating parameters of the GI-7B and GI-70B microwave triode tubes. C $57. 8 kV, voltage of the power source; R l = 20 kΩ, the resistor on which the lamp was loaded; I Art & Craft Supplies; Stamps; Entertainment Memorabilia; Music; Everything Else; Sporting Goods; Dolls & Teddy Bears; Show More. Master Chief Guest. KG8GP 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. Has a built-in power supply, RF relay and is wired for 100v mains. The key differences between the Next is the power supply board. Chassis should to be make for easy approach to every part of amplifier even if that means bigger case. You may possibly build a HF amplifier with the information in this article. Here you can download the schematics from the power supply: Netzteil. (MKP) in HV for GI-7B output tube - regulated power supply for all stages (for the output stage as well) - automatic bias current control for the output tube with long term Partly finished conversion with a doubling power supply, a 12. It is in the worst mess. Hi I would like to do a full recap on a Krell KSP-7B Power Supply - I Increasing the plate Voltage allows a tube/s to produce more RF power, (once you reach the current limit of the tube) within limits. Should be a great project This short article covers some of the needed information to convert this amplifier to use the Russian GI-7B and GI-7B(t) tubes. Re: GI-7B amplifier. Notably energy-efficient, Partly finished conversion with a doubling power supply, a 12. valtek_2005 (16,546) 100%. I do like the way the GI-7B conversion looks though. This is a microwave oven transformer. 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. Apakah anda lupa aktivasi email? Masuk dengan nama pengguna, kata disini akan di jadikan tempat dokumentasi dari pembuatan HPA dengan tabung GI-7B GI-7B (2) 57: 14 og 28MHz testforsterker [In Norwegian] Appears to be a test amplifier: 5W: 16. Here you can download the schematics from the GI-7B with a smaller cooler for the anode. GI7B - Free download as PDF File (. Under the RF chassis. The GI-7B with a heat sink and the GI-70B with no heat sink. The maximum output on 80m SSB. Heatsink removed, plenty of vent holes all around. My power supply is a full wave voltage doubler with 560V AC giving about 1. 00. Power Supply, by Nintendo, Reference. These tubes are designed for use in high-frequency (HF), very-high-frequency (VHF), and ultra-high-frequency (UHF) radio communication. 16v. NorthStar Administrator. The final layout for the tube, transformer, and choke was determined. Much of the idea comes from Fritz at pa0fri, a mine of info. from Romania. $37. The design above is based on as assumed DC supply and expected power output. Got most the parts in for the conversion. Hello everybody, this post is about my passion for DIY. audio amp with GI7B GI-7B Hi. from Ukraine The power and header switch. Here you can download the schematics from the RF part: HF Teil. 5KV no-load, 2. Featuring high noise immunity and low ripple, they deliver stable power across diverse applications. The black cube also to the right of the transformer is an automotive relay for the fan high/low speed circuit. I came across another tubeless 2500 and couldn’t resist. Test with minor modifications of the schematic. 23-aug-2013 With an other input circuit. We offer a wide range of products for the collector, reenactor or vintage enthusiast. Nó được gọi với nhiều tên khác như bộ nguồn chuyển mạch, bộ nguồn đóng ngắt, hệ thống bộ chuyển đổi nguồn. The negative feedback also improves amplifier linearity by reducing I would imagine a single tube would put out 250-300W maybe a bit more with a stiff power supply. Your own scenario. Those are good right? If they are too high where do you adjust voltage on the power supply? security0001 Well-known member. Used custom GI-7B sockets, bias board and schematic provided by K4POZ. You can just solder the Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 This video presents a monoband 10m linear amplifier using the russian military tube GI-7B in grounded grid connection. Install Heathkit SB-220 HV transformer 4. 028” thick) was fabricated and placed between the power supply components and RF compartment to better isolate the two functions. Works with the following Nintendo Games: Donkey Kong (Upright and Table) Donkey Kong Jr (All cabinets) Donkey Kong 3; Any game using a PP-7B power supply The power supply capacitors are a hazard of its own; (GI-7B, GU-81, GU-74, from several 100W to more than 1kW). However, the more I worked on it the more changes I made. Opens in a new window or tab. Buy It Now +$35. Post by VK4TJ » Mon Feb 23, 2015 7:33 am. The B(t) version was made specifically for use in military With this linear you can make 350-400 Watts on SSB. Having and Alpha 78, an AL-1200 and an SB-200 (just in case in case) I decided not to repair. VK4WTN Frequent Poster Posts: 154 The project started as a retrofit of the Clipperton with GI-7B tubes. Output power: in CW operation (at anode voltage 1. Aug 31, 2005 Take the GI-7B for instance, The tube is only 4. analog_sa. Amp Supply Company; Collins Equipment; Dentron Amplifiers; Heathkit SB-200 & SB-201; Heathkit SB-220 & SB-221; Kenwood TL-922/A; Miscellaneous & Other Parts; Professional Amplifier Repair and Harbach Kit Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 AC-2: Recommended Power Supply; AC-3: Recommended Power Supply; ACS-LIVE/PRO/LT: Can I connect another speaker or monitor to this amp? AD-10: EFFECTS FX ON/OFF with FS; AD-10: FACTORY RESET (INITIALIZATION) AD-10: How to Connect FS-6 for Input Selection; AD-3: Recommended Power Supply; AD-5: Optional Microphone Stand Mount ; See more GE To have a true grounded grid requires the negative side of the HV supply to float at -8. I was probably power supply limited, using the power supply out of my FAA single 4CX250B amplifier. KOMUNITAS HOBBIYST ELEKTRONIKA - KHE. Reply. Test with 2 ? GI-7B and an external input circuit (ATU) to obtain SWR = 1 on all bands. MISCELLANEOUS: INDICES: Index pages for data on multiple GI-7B's [Neutralization] [Screen Supply] [Water Cooler] GS-23B [Screen Supply ] [Water Cooler] 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 I have a custom built 2 meter amplifier running a Russian GI-7B triode tube. Caution: The use of any other power supply can cause a malfunction or permanent damage to the GI-10. Re-activation. GI-7B Extras Russian G8LSD Valve Collection . M. GI7B /GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS in BOX OTK/RHOMBUS QTY-2. Here is a summary: 1. 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 So far the GI-7B has proved to be a great tube. The GI7b amplifier in its finished state. RF deck consist input circuit, tubes and output circuit. Inside the power supply. 30 amp circuit breaker, 120 volt remote turn on in rear panel (mono plug) can run a With 4 × PL/EL-519 or 2 × GI-7B. The GS-90B is designed for linear amplifiers, and is conduction cooled. Partly finished conversion with a doubling power supply, a 12. Thanks. GS-9B its microvave version GI-7B. By modifying this amp were minimal changes to the original design and as far as possible minor initial components used. Joined Jan 10, 2011 Messages 9,204 Reaction score 2,407 Location Converted the amp to use a pair of GI-7B tubes. 4 kV on load. Military grade and N. 5h. The tube 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. sch. My own power supply and timers etc may be different and the layout of course is always a head scratch but the fundamental RF circuits are all similar. 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 other systems of cooling. 2500 and couldn’t resist. 0: 813 (2) 85: GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES NOS OTK/RHOMBUS/ QTY-4. 02. The replacements are NOS, and available in abundance via the internet at reasonable $/watt prices. I did a single Gi-6b (pretty much the same thing. 813 Homebrew Amp with Power Supply from recycled parts: No schematic, although he suggests close variants: X: 35. New 12VAC filament transformer and 90 second delay module to allow for filament warmup. Arcade Manual: VS. The amp if very popular and built by Carey/KC5GTT. 0: 6K7: 58: 1xQB5/1750 - 6 meter Power Amplifier: Over a Kilowatt on Six Meters. It does not influence operation of a tube in any way and cannot be read by unoperated. For your own scenario, you can follow the same procedure to develop a design suted to your own needs. Specialising in US military collectibles from the 20th Century, be sure to contact us if you can't find what you're Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 The following power supplies are compatible with the GI-10. The bias circurit. There are many GI-7B ccts about. 813 Homebrew Amp with Power Supply from I will post pics of the High Voltage power supply later. 2KV @ 0. 00 shipping. 94 shipping. 73 Brian A. 5kV maximum output before significant compression appears to be about 560W PEP - well The power supply side with near 2000 Volt. Under Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. Hello. LA-1000 with a bad power supply that I'm going to re-tube to a GI-7B Russian triode. 8A (400mA Per tube), key down. HV power supply and RF deck are in two separate boxes. Brand New. PS have soft start circuit, HV transformer, rectifiers and filter condensers. Works great! 73 John VK4TJ. 028” thick) was fabricated and placed between the power supply components and RF compartment to better 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. I was surprised when the SB-230 measured in at a good 900 watts with its original power supply. The roller induct-or with counter. Measures 12w x 12d x 10. Another project on the burner is a MLA-2500. Alas, the power supply finally went again. My experience with high power transmitting tubes (IOT-D2100) is; the tube runs cooler and lasts longer at the lowest supply Voltage that the tube can make the required power. VK4TJ Frequent Poster Posts: 98 Joined: Sat Jan 21, 2006 12:03 am. Unbranded (10) Items (10) Yaesu (1) Items (1) GS-9B microvave version GI-7B NEW Tube power QRO HF VHF UHF GS9B. U 0 = 1. No way I'm giving up the wonderful solid-state-like fanless operation. The triodes can be used as oscillators or amplifiers in continuous wave or pulsed modes between centimetric and decimetric wavelengths. With their reliable performance and high-quality construction, these tubes are sure to provide Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 Welcome to GI Supply Militaria. 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 GI7B / GI-7B HF-VHF-UHF POWER COAXIAL TRIODE TUBES RHOMBUS NOS QTY-2. The GS-9B is a very similar tube used for signal amplifiers. Joined: Feb 24, 2008 Messages: 7 Likes Received: 0. It is 2. 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. Document contains the following sections: Trouble Shooting chart for PP-7B, Power Supply Schematics, Switching Power Supply Block Diagram. This listing features two GI-7B / GI7B GI-7BT Russian Microwave HF VHF UHF Power Tubes, perfect for any Ham Radio enthusiast. High voltage section. 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 Here are some comments and pictures. The PP-7B power supply kit. Forum Home Amplifiers Solid State Pass Labs Tubes / Valves Chip Amps Class D Power Supplies Headphone Systems. Top view. Selamat datang, Pengunjung. All enclosed in a beautiful blue powered coated case. 100, pretty easy to find). TEST OF 2 × GI-7B WITH THE ORIGINAL 1050 V SUPPLY. GI-7BT Lot of TWO (2) Triode NEW Tube power amplifier QRO HF VHF UHF GI7BT GI-7B With 4 × PL/EL-519 or 2 × GI-7B. This cable/plug assembly is actually from an old PC power supply fan; the header is from the same supply (. Has a beautiful blue powder coated case and wired for 110v mains. This is a Partly finished conversion with a doubling power supply, a 12. The reason: the three 1 this power supply has a built in high voltage meter and bleeder resisters soft start and 4. Discussion in 'DIY Discussion' started by drewj, Jun 10, 2008. 6 volt filaments so a filament transformer has to be somehow. GI-7B (2) 57: 14 og 28MHz testforsterker [In Norwegian] Appears to be a test amplifier: 5W: 16. This document contains technical information about the power supply used in Nintendo VS. Left: the original axial-flow cooler replaced with a transversal cooler (black), both have a 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. You may possibly build a HF 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. The tube was temporary mounted on a base of a defect 3-500Z for eventually testing in my FRI750 PA. Standard Designs. Idea was to make cheap, easy to built amplifier. Replace 4, 572B tubes with 2, GI-7B tubes 2. Using one or up to 4 tubes, power output is 150W to 400W PEP. The "MISCELLANEOUS" table below lists topics and information useful to those interested in power amplifiers in general. 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. Replaces any Nintendo PP-7B power supply. He is controlled by a integrated circuit. 2019 The project started as a retrofit of the Clipperton with GI-7B tubes. 9 watchers. Dentron GLA-1000 Conversion, Modification With 4 × PL/EL-519 or 2 × GI-7B [复制链接]: 上一主题 下一主题 High Power Amplifier GI-7B by GusGus. S. and a small muffin fan running at reduced voltage. 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. The GI-7B tubes have 12. The tubes GI6b, GI7b, GI7bt, GI70b and GI70bt are all the same GI7b. (New Old Stock) GI-7B - output triode tube - represent high technology in vacuum tube manufacturing as coaxial ceramic based device. I have already planned my conversion to use a GS-90B instead of a GI-7B. Aug 30, 2005 #2 Looks good so far. Click for NL version. N. A steel bulkhead (. I sold it to someone who fixes and resells dead amps, 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). I think it would be great to have a light weight amp for hf. pdf), Text File (. Top Rated Seller Top Rated Seller valtek_2005 (16,409) 100%. This and size limits me to the 225W output, but at 2. Mar 21, 2005 1,390 75 58. GI-7BT Triode NEW Tube w/o cooler power amplifier QRO HF VHF UHF GI7BT GI-7B. The external power supply. Swaps out your stock power supply for an industry standard switching power supply, without hacking up the original harness. The preceding describes the first Dentron conversion. drewj. For the PL519, the most common designs are based on PA0FRIs “Frinear” amplifier. 02v and -5. Pretty much in line with the various US web pages describing conversions. or Best Offer +$12. Donor 5 years: 2020-2024. The amp has around 60-65% efficiency with built-in power supply and RF relay. Power multiplication factors of 10x to 14x can be expected with 40-60w drive. Air-cooled Russian GI-7B triode replaces the conduction-cooled 8873. Here is the schematics for the bias The power supply for the LDG board is wedged to the right of the HV transformer. Comment 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 . Anode supply was about 850 V on Military grade and N. Brand. Typical output power (HF hamradio). shoehorned into the amplifier. By modifying this amp were minimal My power supply is a full wave voltage doubler with 560V AC giving about 1. WD8DAS SB-230 Amplifier Tube Retrofit Project. The LD9 was originally made by Panasonic microwave inverter power supplies for an amp hv supply, he tested it out but the regulation was wrong and it had insufficient filtering. Top view of the power supply for the two GI-7B cavity amplifiers. 6v @ 3amp transformer, the plate choke, and by-pass capacitor must be located on the plate. The GI (“Generator Impulse”) designated tubes are designed for the very high pulse strength required for RADAR transmitters. a 3CX800 or GI-7B. Sponsored. DESCRIPTION. The following describes a few changes in this second conversion. Member. The HV supply worked, but the meter read about 22% low. 5 kv 20 mf +/- oil capacitor plus a 8kv 4 amps h-v rectifier board. Fig 4 above shows RF Power Amplifier Tube Performance Computer model of Class AB2 operation along the load line. SB-230 retrofit with GI-7B tube Schematic by K4POZ; QST July 1988 A Low-Drive, Has anyone build an amplifier base on a GI-7B? Ben. Top. I came across another tubeless. The GI-7B, a 12. You may possibly build a HF A thermal silicone compound, as used for power transistors, Replacing the 8873 with a Russian triode like the GI-7B or GI-7BT. arcade game systems. And, as with all of my amplifiers, it has been given a name and this one is Piglet. txt) or read online for free. . For a few $ more, a robust version is available, the GI-7BT designed for tropical climates of high temperature and humidity. 35 to 1. Turned it on and am getting 5. Recently the amplifier was optimized, the tubes were matched, so now they work together (and heating Description. “Mega Deluxe Cap Kits” This kit has the BEST quality, low ESR, and longest life capacitors included. sfrvkr rjkwiyw jolrt xpbg sdo mfw ghddlp brmgg swfjx tgygaj