[sdiy] MOSFET instead JFET?

[Tony Clark]

> 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), maybe
> just few changes to original ccts?
> Is there something crucial that prevents us from using mosfets in this
> way that I don't see?

   No, not really unless you consider the increased hazard to static 
electricity.  The only major difference is the voltage that turns 
them on.  I use the BS170 in my circuits (although I haven't redesigned 
my VCO to utilize the MOSFET yet) and I like the way they perform.

   Cheers,

   Tony

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