Re: Recent s.s.t.c work

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Original poster: "K. C. Herrick" <kchdlh@xxxxxxx>

Back to the workbench for a little while:  I find little phase shift 
in the 1:1 c.m. choke I use for a transformer.  Instead, there seems 
to be quite a bit in the "pilot oscillator" circuit when it's being 
used as the feed-thru path for  the feedback signal.  I have to get 
rid of that scheme & instead, bypass that oscillator with the 
feedback signal.  Happily, I see a way to do that with a couple of 
unused logic gates currently on the board.  Just have to do a little 
more re-wirewrapping...and debugging, of course.

Sean Taylor:  Your microprocessor scheme would be daunting for this 
old analog has-been.  (I was called that, in sardonic jest, by a 
collegue over 40 years ago & the expression still entertains me.)

One could easily generate logic-level pulses at primary-current and 
bridge-supply-current sign changes, using the standard EX-OR gate 
circuit.  Then the trick would be to make a delay or control circuit 
that would bring those pulses into coincidence.  Beyond that, I 
haven't yet thought anything thru.  Except for the above, to see if I 
can make my scheme "good enough".

KCH