[Amps] Supply question

[Gary Schafer]

The no load voltage will be no greater than 1.414 X transformer voltage. In
your case 3959 volts. 
I always use a ball park number of 1.25 X transformer voltage for full load
voltage. That would give you around 3500 volts depending on how good a
transformer you have. You won't be far off.

73
Gary  K4FMX

> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]
> On Behalf Of Michael J Talkington
> Sent: Tuesday, July 19, 2011 8:48 PM
> To: amps at contesting.com
> Subject: [Amps] Supply question
> 
> 
> Hello,
> I am building a single band hf amp. I am using two 3-500Z tubes. The
> specs for the tubes say
> 4000 Volts dc max. I keep hearing people volting these tubes in standby
> above this voltage
> and when they transmit the voltage sags to 4000 vdc or a little below.
> Is this bad for the tube?
> If I figure correctly 2800 volts ac full wave bridge and after filter
> caps I should get  4032 volts dc
> 2800 X 1.44 am I correct? I will be bombarding you with questions cause
> I want to do this right.
> Thanks Mike N8FWD
> 
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