On 7/19/2011 9:14 PM, Carl wrote:
> At that voltage the layout and construction takes a lot of TLC, even on 160.
> Id suggest 3200-3500V key down for long term reliability.
What's that extra voltage do to the IM Carl?
73
Roger (K8RI)
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Michael J Talkington"<n8fwd@hotmail.com>
> To:<amps@contesting.com>
> Sent: Tuesday, July 19, 2011 8:47 PM
> 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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