----- Original Message -----
From: "Roger (sub1)" <sub1@rogerhalstead.com>
To: <amps@contesting.com>
Sent: Wednesday, July 20, 2011 3:54 AM
Subject: Re: [Amps] Supply question
> 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)
Its right on the spec sheet.
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
>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
>>>
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>
>
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