Requirements for the amp should be stated like this: what degree of linearity
should I set for this amp, and given that... How do I design the power supplies
and tank circuit to meet the specs I set. With a the average tetrode, the
screen and bias supply regulation will impact the linearity far more than the
anode supply. You can determine the regulation needed for a given linearity
right off the tube curves. The place most people fail is in the design of the
bias supply (usually can't handle the current properly). There is a ton of
literature on designing non-coupled supplies for tetrodes...
Sincerely,
Dr. William J. Schmidt, II K9HZ
Trustee of the North American QRO - Central Division Club - K9ZC
"Collector of Edison Wind-up Phonographs... Do you have one for me?"
Email: bill@wjschmidt.com
Alternate Email: wmschmidt@charter.net
WebPage: www.wjschmidt.com
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On Behalf
Of Frank Goenninger
Sent: Sunday, December 28, 2003 2:55 PM
To: amps@contesting.com
Subject: RE: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ?
Thx for quick response.
Referring to your question:
On Sun, 2003-12-28 at 21:35, Dr. William J. Schmidt, II wrote:
> <<I'm looking for a regulated power supply design where output
> voltage does not drop more than 1% on load. I will be using a 3-phase
> 400V mains line.>>
>
> What is the point of this???
>
I think I should re-phrase my question:
Considering a grounded-cathode circuit for a tetrode (like GU-84b), what is the
requirement for the plate supply concerning voltage stability and ripple? (I
also would like to know "Why", if you could please explain...)
Thx again.
> Sincerely,
>
> Dr. William J. Schmidt, II K9HZ
> Trustee of the North American QRO - Central Division Club - K9ZC
>
> "Collector of Edison Wind-up Phonographs... Do you have one for me?"
> Email: bill@wjschmidt.com
> Alternate Email: wmschmidt@charter.net
> WebPage: www.wjschmidt.com
>
Regards & 73
Frank DG1SBG
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
> On Behalf Of Frank Goenninger
> Sent: Sunday, December 28, 2003 1:55 PM
> To: amps@contesting.com
> Subject: [Amps] 3.5 kV 2A REGULATED Power Supply: Schematic ?
>
> Hi all on the list:
>
> I have now tried to find (for several days) a design that builds a
> power supply for about 3.5kV and 2A.
>
> I'm looking for a regulated power supply design where output voltage
> does not drop more than 1% on load. I will be using a 3-phase 400V mains line.
>
> The objective is to have a "standard" power supply for various amps I
> have in the pipeline - starting with a GU-84b based grounded-cathode
> project. Next, I want to build one with a 4CX3500A (boy, what a piece of
electronic device, wow).
>
> So, all the "surrounding" modules should be as much adjustable as possible...
>
> Hm, I wonder if you guys have something to look at and to start from.
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