> When you say 1.1 volts, is this DC or is it oscillating?It's 1.1 VDC between pin6 & 0V
If I measure AC voltage with my (cheap) multimeter is shows 0 VAC ??
So I presume it would be best to replace the CA3140 & the MPF102.
thanks,
steven
--- In cgs_synth@yahoogroups.com, "djbrow54" <davebr@...> wrote:
>
> --- In cgs_synth@yahoogroups.com, "stiebz" <theevaporizer@> wrote:
> >
> > when i wanted to test my bin-n-tic, i incidently switched + and -
> > power supply. after i fixed the problem, I have no sound
whatsoever.
> > I measured 1.1 volt between pin6 of the ca3140.
>
> When you say 1.1 volts, is this DC or is it oscillating?
>
> For whatever reason, I only had 1 volt pk-pk on the output of my
3140.
> I had built this module with an MPF102 FET. I replaced the MPF102
FET
> with an NTE466 since I could buy it locally. The package is a TO-
18
> but would fit on the pcb rotated. This FET operates correctly and
and
> I get a 5 volt waveform on the output of the CA3140.
>
> Dave
>