[Amps] w1qwj 6m Amp + W9QQ smps

[Bob Maser]

Have I been missing something regarding power supply construction?  Mine 
won't pass muster because all it has is a big honking transformer, more 
diodes than it needs and a 50 lb capacitor(with Pyranol BTW).

Bob W6TR
----- Original Message ----- 
From: "Paul Decker" <kg7hf at comcast.net>
To: <amps at contesting.com>
Sent: Monday, March 16, 2009 2:20 AM
Subject: [Amps] w1qwj 6m Amp + W9QQ smps


>
>
> Hello amp builders.
>
>
>
> An update and a couple more questions.
>
>
>
> A version of the w9qq power supply is moving forward, not quite at warp 
> speed, but forward none the less. The clock module and clock amplifier 
> section are built up and tested. I'm trying to workout a sane layout for 
> the power mosfets to facilitate decent cooling. #18 HV (2000vdc) wire is 
> on order as is HV teflon tubing for it which should complete the 
> transformer section.
>
>
>
> Maybe when the ps is done, someone local ( southern NH) with an HV 
> scope/probe can help me take a look at how clean/dirty it is?
>
>
>
> Once the power supply is mostly complete, I'll obviously start to focus 
> heavily on the RF deck, but I have done some work. The dentron chassis 
> went through the dishwasher , unfortunately, I wasn't sneaky enough and 
> got caught by the (x) yl who wasn't happy about that. (although I told her 
> that she could always buy me a parts washer)
>
>
>
>
>
> Now for a couple of the questions, so I can think a bit ahead.
>
>
>
> The w1qwj schematic is for a single 3cx800. I'm pretty sure I physically 
> have room for two and would like to set myself up for a later addition of 
> a second one since I don't have a second tube, socket, or chimney right 
> now. What sorts of things change when adding a second tube? I'm guessing 
> input and output impedance. For the untrained, how do i figure out how to 
> compensate for a second tube? Right now I'm just looking for some high 
> level information to get me going in the right direction. Even if it's 
> "don't put a second tube in" type of discussion.
>
>
>
>
>
> Thanks,
>
> Paul, kg7hf
>
>
>
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