[sdiy] MOSFET instead JFET?

[Neil Johnson]

> I was looking at mosfet datasheet (BS170), it's Ron=5 ohm, nice it is,
> has anyone tried it instead jfet in VCO (for cap discharging)

... Reminds me of a project I did once which used about 20 large IGBTs
(sort-of large FETs/BJTs) arranged around three discs (drain, source,
gate) for dumping several thousand amps into a 1-Ohm load with sub-ns
rise-time.  Now THAT's what I call discharge!!!

Should've seen the capacitor too....  I used to wear a welding mask during
initial testing...

Neil (enjoying the 3-pole filter topic)

--
Neil Johnson :: Computer Laboratory :: University of Cambridge ::
http://www.njohnson.co.uk          http://www.cl.cam.ac.uk/~nej22
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