Ferro-resonant xformer conversion?

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Thu Jul 22 17:41:24 2004

>
> Assuming you have a ferro-resonant transformer targetted for 60Hz
> operation and you want to convert it into 50Hz (assuming current load is
> the same)..
>
> Question:
> - if one just maintains the RC value, the tank would still resonate and

Surely it's the LC (Inductance, not resistance) that needs to be
maintained.

Now, resonat frequency goes as 1/sqrt(LC), so if you drop the frequency,
you need to either increase L or increase C. The former can be done by
adding turns to the winding (maybe there are taps for this, there are in
the PSU of my Diablo series 30 drives).

> perform its function of maintaining load and line regulation?

-tony
Received on Thu Jul 22 2004 - 17:41:24 BST