[HAM] Converting to a SS rectifier

[Christoph P. Kukulies]

On Tue, Jan 23, 2007 at 01:30:24AM -0500, ElSeveno at aol.com wrote:
> 
>   I can't find a 5V3 or 5AU4 for my 55C amp so I want to copy the diode 
> bridge in the later amps. Anybody have any caveats? I know I should have a surge 
> resistor does the 5 watt 8 ohm sound about right? Any advise welcome.
> 
> paul

Big caveat, Paul!

Although I don't know the 55C amplifier in detail - I just took a look
at the schematics of an 51C - I can say that it may be possible that
you blow your filter caps and even endanger your power transformer.

You are saying "diode bridge". This requires a power transformer with
a secondary winding that is different from the one for the (two way)
tube rectifier circuit. The latter (tube rectifier) uses a tapped winding.

Connecting a bridge rectifier to it would double the voltage (near 1000V!)
A nono.

You may use two diodes across the socket of the rectifier tubes, but to tell
you exactly the pins I'd need a circuit diagram.


--
Chris Christoph P. U. Kukulies kuku_at_kukulies.org