[sdiy] Voyager Oscillator #3

[cheater cheater]

without looking at the schematic, possibly a broken comparator/schmitt trigger.

Cheers,
D.

On Mon, Jun 21, 2010 at 16:21, Anders Sponton <anders.sponton at yahoo.se> wrote:
> Hi
> yes, no waveform, just +5V DC.
> Anders
> http://rubidium.dyndns.org/cag/
>
>
> --- Den mån 2010-06-21 skrev cheater cheater <cheater00 at gmail.com>:
>
>> Från: cheater cheater <cheater00 at gmail.com>
>> Ämne: Re: [sdiy] Voyager Oscillator #3
>> Till: "Anders Sponton" <anders.sponton at yahoo.se>, "synth-diy" <synth-diy at dropmix.xs4all.nl>
>> Datum: måndag 21 juni 2010 13:20
>> Hi Anders,
>> not sure what you mean that the scope shows. Does the
>> waveform show up
>> across the integrator cap? That means, one probe on one and
>> the other
>> probe on the other cap terminal. Or is it DC? And if it
>> just charges
>> up and sits at DC, then what voltage is it at, with
>> relation to the
>> comparator's reference voltage?
>>
>> Cheers,
>> D.
>>
>> On Mon, Jun 21, 2010 at 14:26, Anders Sponton <anders.sponton at yahoo.se>
>> wrote:
>> > Hi again.
>> > The scope shows on both sides of integrator cap.
>> > No resetting.
>> > On my schematic (page 11 of 15): U71 pin 9, 12 and 13
>> have full +15V.
>> > D47 is OK, U82 is swapped.
>> > I´m puzzled.
>> >
>> > Anders
>> > http://rubidium.dyndns.org/cag/
>> >
>> >
>> > --- Den sön 2010-06-20 skrev cheater cheater <cheater00 at gmail.com>:
>> >
>> >> Från: cheater cheater <cheater00 at gmail.com>
>> >> Ämne: Re: [sdiy] Voyager Oscillator #3
>> >> Till: "Anders Sponton" <anders.sponton at yahoo.se>
>> >> Kopia: "sdiy" <synth-diy at dropmix.xs4all.nl>
>> >> Datum: söndag 20 juni 2010 10:52
>> >> What do the CVs do when you're trying
>> >> to play it?
>> >> What does the scope show across the integrator
>> cap?
>> >> Does the reset circuit trigger?
>> >>
>> >> Cheers,
>> >> D.
>> >>
>> >> On Sun, Jun 20, 2010 at 09:36, Anders Sponton
>> <anders.sponton at yahoo.se>
>> >> wrote:
>> >> > Hi guys
>> >> > I´ve got this Voyager that the oscillator #3
>> doesn´t
>> >> work. I have replaced the IC´s in the oscillator
>> and
>> >> exponential circuits. It won´t oscillate.
>> >> > Maybe the oscillator driver circuit? Any
>> idea?
>> >> >
>> >> > Anders, Sweden
>> >> > http://rubidium.dyndns.org/cag/ (down
>> for
>> >> the moment)
>> >> >
>> >> >
>> >> >
>> >> >
>> _______________________________________________
>> >> > Synth-diy mailing list
>> >> > Synth-diy at dropmix.xs4all.nl
>> >> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>> >> >
>> >>
>> >
>> >
>> >
>> >
>>
>
>
>
>