[ARC5] BC453 FET BFO Success!!!

[J Mcvey]

I have succeeded in implementing a FET driven BFO in the BC453 using the the original BFO coil and a minimum of wiring changes.It uses the original BFO cut-off circuit too!Total parts count = 6Basically the mod disconnects the 12SR7 triode and replaces it with the FET 
The BFO supply is clamped to 24V with a zener.
There are some bias and stability parts that are added to make the FET happy. It's not a "direct changeover".The "grid leak" setup on the triode is not used with the FET

Looks to be very stable .
I'll write this up sometime in the next couple of weeks if there is any interest.
JIm


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