• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Okay, Can someone suggest if this PSU can work

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I plan to at least use this power transformer for a Double darling tube amplifier. Now, I have seen Jeremy Epstein's DC Double Darling and the outputs are about 385-400VDC. Now, our Airline wards is about 275VDC out and about maybe 300VDC @ C1. So,taking into account the possibility of getting more voltage DC yes that can be accomplished but how can you go from a DC voltage to a higher voltage DC in a Voltage doubler circuit, probably not; I am thing some kind of Step up transformer... I have seen stacked Power supplies also, so in order to get the voltages and current I need for just the 1626's PSE, I would presume that running them at plate current of 30mA each at about 325VDC would give about 10.88 watts of dissipation each. Those Military tubes supposidly can take this amount and others claim they sound a lot better at these higher currents, etc. So that Ia current of 30x4 = 120mA needed So having another power supply would be needed, since we now dont' have enough current for the 12AV7's What would you do and is there anyone out there that can sketch something up for me to get all needs met, with powering my New Double Darling amp? I want to keep the 6CA4, and the Airline Ps...If you can draw something up, with values that will work, I would be very happy! Thanks Everyone. pianolydia


  • PSU 1626'S.PDF
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I have, and the issue is, How does anyone know?

I may be mistaken here, But I have not seen any values of resistance on electrolytic capacitors. Yes they probably do But; They don't publish those specs like at Parts Connexion, Parts Express no where it seems. Maybe I am looking in the wrong places. 2nd, If I input the exact values Airline has an do a test on there design, It would not come out as exactly they have stated it as. I guess Machine vs Engineering Math could be two worlds here. What do you think? P.S they also in PSU II state the RMS mA output why that? why not just state what it is going to be plain and simple? pianolydia
Joined 2011
Since it appears that you lack basic electronic knowledge, it would be better if you just follow a known design exactly such as JE's Darling, instead of trying to do on-the-fly engineering which is what you are asking the guys to do for you. Once you get a few projects done, and figure out the basics, then you can tackle something a bit more challenging.
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