[sdiy] Partial solution - WAS: RE: Odd transistor connection, why???

[David Ingebretsen]

First thanks to everyone who replied on and off list.

Second, Oren suggested the EG transistor was acting like a zener diode. I
replaced the transistor in the simulation with a 6.2 volt zener diode model
and it works like a champ.

The VCO core is still baffling me, but I'm happy to confirm the EG
operation. Now I can learn more about it.

David

~~ -----Original Message-----
~~ From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
~~ bounces at dropmix.xs4all.nl] On Behalf Of Paul Perry
~~ Sent: Monday, May 17, 2010 7:14 PM
~~ To: synth-diy at dropmix.xs4all.nl
~~ Subject: Re: [sdiy] Odd transistor connection, why???
~~ 
~~ I believe a transistor connected in this way can act as a diode
~~ with an unusually low leakage (but, a low reverse breakdown voltage).
~~ I don't know if that is what is going on in this circuit, which I have
not
~~ seen.
~~ 
~~ paul perry melbourne australia
~~ 
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