[Amps] caps..

[Carl]

You wont see any difference key down. The difference, if any, will be 
regulation and a slightly higher PEP on SSB.
If the transformer isnt heating excessively you are OK.

Its the amps with the barely adequate transformer that are in danger.

There is also a much higher power-on current so consider a step-start and 
the stored energy in case of a tube arc/short is much larger and there Id 
suggest a minimum of a 25 Ohm 50W glitch resistor and preferably 50 Ohms.

Carl
KM1H


----- Original Message ----- 
From: "Dwayne" <863 at telus.net>
To: <amps at contesting.com>
Sent: Friday, April 13, 2012 5:56 PM
Subject: [Amps] caps..


>    Hi Name is Dwayne (ve6qx)
> I recently changed out the electrolitic caps in my 3800 volt power supply.
>    from 10 210 Mfd at 450 volts to 10  530Mfd at 450 volts per cap. I did 
> this
>    thinking that I would lessen the decay of the voltage when the amp is
>    keyed..  The power supply is a voltage doubler..
>      But I'am thinking perhaps all I did was provide to much capacitance 
> for
>    the capability of the transformer..  Perhaps this is more stress on the
>    trnasformer.???   All I have noticed is a longer decay time for the 
> voltage
>    to return to zero when shutting down the amp.(makes sence,more 
> capacitance)
>    Other then that it works fine.. Thanks and maybe someone has a 
> explanation of what's going on cause of this change in cap..
>     Dwayne.   Ve6qx
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