zzz
500+ Head-Fier
- Joined
- Apr 3, 2002
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Kevin Gilmore's amp for electrostatic headphones (http://www.headwize.com/projects/sho...lmore2_prj.htm) requires a +580V, +-350V power supply and he provides the schematic for such PS. The problem is that I could not find one of the transistors he uses (2SA1968) anywere. And while I know what transformer does, what diode `loop` does, what these caps and zener diodes are for, I have no clue what the transistor/resistor blocks are supposed to be doing. And because of that, I have no idea what could serve as a sensible replacement for that 2SA1968...
Gurus, help
.
Another question: do you put zener diodes in series to get a zener with larger breakdown voltage? I guess this question is too basic to be even considered anywere (need to get 350V and have 200V and 150V)...
Gurus, help
Another question: do you put zener diodes in series to get a zener with larger breakdown voltage? I guess this question is too basic to be even considered anywere (need to get 350V and have 200V and 150V)...