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@comcast.net>
To: <amps@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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