On Wed, 10 Dec 2008 11:41:45 +1100, Franc Zabkar
put finger to keyboard and composed:

Having said that, I can't follow the current path. It appears to flow
into the transformer's centre tap and then out via either end of the
primary winding. It must then flow through the "transistors" into the
"oscillator" because the side paths are blocked by reverse biased
diodes. But the remaining terminal for the oscillator is also blocked
by diodes ...

Sorry, I didn't read bud's post properly. It appears that he has
already come to the same conclusion.

- Franc Zabkar
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