PDP8A chassis 50Hz

[Peter C. Wallace]

On Sun, 19 Sep 2004, vrs wrote:

> > look at the capacitor connected to the transformer. That is a constant
> > voltage transformer and will need 50 hz to work correctly.
>
> Hey, I have one of these on a shelf as a "spare" 8/a chassis (with almost
> enough spare boards to make a spare 8a :-)).  I'd like to know if the 50Hz
> turns out to be a strict requirement or not.  If so, is there is any easy
> way to convert the thing for 60Hz?
>
> Thanks!
>
>     Vince
>


Probably replacing the capacitor (Oil or PCB) with one about 70% the
capacitance of the current one would be the easiest thing. This is to shift
the resonance up to 60 Hz. Be very careful of the resonant capacitor circuit,
it has quite high voltages...

Peter Wallace