[Amps] Transformers

[Gudguyham at aol.com]

In a message dated 7/16/2006 9:57:42 A.M. Eastern Standard Time,  r at somis.org 
writes:

 
There has been a lot of discussion over the years, especially in the  early 
days when one did not have a PEP reading watt meter.  So, the  rule of thumb 
"at the time" was that PEP was ~ twice the average DC  input.  SO...What don't 
you see?



That the rule of thumb is  accurate.





Granted it is NOT a direct 2 to 1 ratio, but at the time "for all practical  
purposes" it seemed the be an accepted approximation. Short of sophisticated  
electronic equipment to accurately measure PEP power the "rule of thumb" 
seemed  to be acceptable to many.  We have to remember the vintage of the SB-220  
and the "mind set" of PEP vs. DC input at the  time.\Lou