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813 / GM70 amplifier with Bartolucci ... - Audio Design Guide
http://www.audiodesignguide.com/Claudio845/813amp.html
813(FU-13) output tubes. The 813 is a general-purpose transmitting beam power tube with thoriated-tungsten filament with a maximum plate dissipation of 125 watts. It is a very linear tube in triode connection with the same amplification …
813 SE triode amps - Pete Millett's DIY Audio pages
http://www.pmillett.com/813_se_triode_amps.htm
The power supply I built for the 813 amp is a solid-state rectified supply that uses two large toroidal transformers, one for the high voltages, and one for the low voltages (filament power, etc.) It uses a microcontroller to sequence voltages at …
Shuguang Vacuum Tube 813 For Tube Amplifier Replace FU13 ...
https://www.iwistao.com/products/vacuum-tube-813-shuguang-for-tube-amplifier-replace-fu13-high-power-output-quality-hifi-audio
Shuguang Vacuum Tube 813 For Tube Amplifier Replace FU13 High Power Output HIFI Audio Tube 813 belongs to antique one, which is a direct thermal beam …
Audioromy 813 Amplifier - LAMPIZATOR
http://lampizator.eu/amplifiers/CHINA/audioromy/Audioromy%20813.html
The power tubes are gigantic. they are comparable to GM70, except that 813 have additional electrode on top of their head. The supplied 813's are obviously chinese made, but this radio broadcasting tube was popular worldwide in the 50's and is available as nos from many many brands. The similar amp at similar price is called Sound Track 813 Class A
Vacuum Tube - 813, Beam Power Amplifier | Antique ...
https://www.tubesandmore.com/products/vacuum-tube-813-beam-power-amplifier
Vacuum Tube - 813, Beam Power Amplifier $79.90 Quantity * Add to cart In Stock Quantity in stock: 11 New-Old-Stock (NOS) tube. Also known by US military identifier VT-144.
Wingfoot 813 Amplifier - Main Page and Front and Side …
https://www.frostburg.edu/personal/latta/ee/wing813amp/amplifierpics1.html
the 813 amplifier and its matching power supply is extremely dangerous since very high voltages are present when the equipment is turned on, and may even be present when the equipment is turned off and unplugged. If at all possible, do all work with …
813 Linear Amplifier Project - w4npn
https://www.w4npn.net/813-linear-amplifier-project/
Thousands of 813 amplifiers have been built so there is nothing new here and I’m using the simplest circuit I can find. I selected 813’s for several reasons: 1) They are very rugged and forgiving tubes; especially the ones with graphite (not steel) plates. 2) They are low cost, and I already had one and found another graphite NOS one for $25.
813 linear amplifier. Lets add a tube! - ZL1BJQ
http://zl1bjq.co.nz/813saga.html
Below, 813 linear amp, two tones in, single tube output at just over 200 watts. Linearity is good, a bigger copy of the input. Top view, single tube. Another tube will be added and the heater tranny replaced...there is room.
CHAMP 1,000 Watt TUBE AMPLIFIER - Vintage Amp Repairs
http://www.chambonino.com/construct/const9.html
The 813's are run with 2,500 volts on the plates (anodes), 750 volts on the screens (grid 2's) fixed bias of course. This humungous monster is pushing 1015 watts RMS!! You could toast your bread from the heat they are kicking out! I wanted to get this article on the site ASAP and have done so
813 tube | eBay
https://www.ebay.ca/sch/i.html?_nkw=813+tube
10pc 7pin Ceramic vacuum tube socket 813 FU-13 4B27 5-125B 8001 amp audio guitar. C $67.99. Was: Previous Price. C $94.43 28% off. or Best Offer. Free shipping. from China. Free returns.
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