[sdiy] AD633JN ring mod

[Toby Paddock]

I powered the trimmers from 'regulated' +/- 0.7V instead of +/-15V 
to isolate from power supply imbalance. Using a resistor and 
forward biased diode for each 0.7V source.

 - -- -  Toby Paddock

Tom May wrote:
>It seems the first thing that anybody, myself included, 
>mentions wrt the 633 is that you'll want to use offset 
>trimmers.  I'm surprised that hasn't been mentioned.
>Tom.