2013年9月2日 · 电子管整流，clc滤波供b+，再加稳压部分专给1625的帘栅极（4脚）和前级供电。

2007年1月7日 · What I'm trying to do, basically, is come up with a low cost, higher-power amp using 1625's, which are basically the equivalent of the 807, except having a 12.6v filament and offbeat 7-pin socket. The 1625's are war surplus in big supply, and are ony about $5 just about everywhere for NOS, and can do up to 100w with just 1 tube, they say.

2022年4月15日 · 老刘：不用单独订12.6V灯丝的变压器，用常用的6.3V灯比变压器两组串联就可以了。 有很多管子的灯丝电压特殊，其实只要灵活运用变压器都是可以用的。 例如有3.15V灯丝电压的管子，两只管子串联再接6.3V； 还有4.7V灯丝电压的管子，视灯丝电流情况串入合适的电阻后用6.3V电压或5V电压的变压器都可以； 还有9V、14V电压灯丝的管子，用6.3V变压器用两只二极管加两只电解电容经过倍压整流，通过调整滤波电容的容量都可以得到你所要的电压。 老刘： …

2020年9月7日 · My friend drew up the schematic based on what we had on hand. The rectifiers are RCA 816 mercury vapors, power tubes triode wired 1625, and driven by 6J5GT. The 6J5 are half a 6SN7 and I've been collecting them for years... I'll do distortion and power ratings soon. The meters need a little tweaking but sounds ok so far. Wow. Very nice.

2012年11月30日 · The UX7 base top-plate cap 1625 is part of the famed 807/6L6GC family and was used in WW2 to provide radio communications - the AN/ARC-5 Command transmitter - for the majority of the planes in the United States Army and Navy.

2007年1月6日 · Some exchages with Tubelab have inspired me to build an SE amp similar to his Simple SE design, but using a 6AH6 pentode in triode mode at the input and a 1625 output tube (both extremely cheap and plentiful). I'm using the budget Edcor 5K …

2017年12月20日 · New Project: The Command 1625 Deuce Tube Amplifier It's been a few years since I've built a DIY amplifier, so I approached this project with some trepidation. With my new house with no dedicated listening room, I went from a multi-kilobuck system to something considerably more down market.

2023年3月6日 · I also made an UNSET PCB for the 1625, pic below. I modeled my circuit with using the 12GN7A in triode made for the driver and the LTSpice simulations are excellent. The planned transformer is 5.2K PP which Edcor has and I biased for mostly class A. Power output is about 25W at clipping and 20W in class A.

2020年9月7日 · My friend Chris Hornbeck drew up the schematic based on parts we had and I was the solder monkey. I'm definitely doing autocad chassis from here on out. I only made one mistake so I am getting better.

2025年3月26日 · Here is the newest amp I just completed. It is a SE Triode strapped 1625. It is made with Goncalo Alves - a sustainable tropical wood that has a class A fire rating. The sound is very clear and transparent with nice timbre. I designed it to put out an estimated 5W, though I need to take measurements on it.