These are the schematics I used to build my first set of plasma
tweeters. Some of the resistor values were difficult to find, so I
used two in series, hence the 51k+12k nomenclature.
## 10/5/00: NOTE:There was an error in my original tweeter schematic: the
4.7nF cap on the collector of the BF869 was connected to the emitter.
This error has been fixed.##
## 3/8/01: NOTE: This schematics shown below are new, but electrically
similar to the originals, with the exception that the crossover point is
fixed at 530Hz and the volume and flame controls are independent. I
suggest omitting the fan circuit since it causes noise and the two fuses
on the filament power. The best place for an extra fuse would be on the
600v rail supply.##
Power Supply Schematic:
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