[Milsurplus] Was Model 19, now transformer line frequency question ??

wf2u at ws19ops.com wf2u at ws19ops.com
Mon Feb 16 15:46:49 EST 2009


The original AC supply for the Canadian Wireless Set 19  MkIII has a  
ferro-resonant transformer which has a special winding connected in  
parallel with a resonating capacitor designed so that the resonant  
frequency of the circuit is the line input frequency. With the special  
arrangement and magnetics arrangement of the core, the "ferro resonant  
transformer" has voltage regulating properties. For proper output  
voltage, loading and regulation the appropriate taps have to be  
connected also depending on the input line frequency.


73, Meir WF2U
Quoting Phil Mills <pmills7 at comcast.net>:

> There was some mention of tranformer strapping vs input frequency in  
>  an earlier post.....
>
> I always believed, possibly wrongly, that a transformer could be   
> used at a higher
> frequency than it was originally made for but not the   
> reverse....meaning I could use
> a 60 cycle power transformer at 400 cycles but could not use a 400   
> cycle transformer
> at 60 cycles because the 400 cycle transformer used less iron in the core.
>
> Is my thinking on this correct?
>
> thanks, 73, Phil
> W5BVB
>




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