When things get unexpectedly mixed, check your power rails. Follow them
right through to the pins of the chips, particularly the 4007s.
Ken
transistors out.
between the 2 outputs.When i put a cv/gate into the pulse input that signal
than gets mixed with the other 2 and still no toggle occurs.Also, i've
noticed if i only use a1 input i get what sounds like a inverse of the
waveform on a2.
jack in the other 2 sections.
lm3900 going to pin 3 of 4007 switch i am measuring almost +6v but none of
these values ever changes with the gate
switch.<br><br>I'm getting 12.5v into the lm3900 and +/-6v out.I've
checked all the wiring,traces,values and have also tried swapping all of the
chips and transistors out.<br><br>If i try to send 2 separate inputs(a1,a2)
out to 1 source(d) i basically just get a weird mix of the 2 waveforms with
no cv/gate trying to toggle between the 2 outputs.When i put a cv/gate into
the pulse input that signal than gets mixed with the other 2 and still no
toggle occurs.Also, i've noticed if i only use a1 input i get what
sounds like a inverse of the waveform on a2.<br>All 3 sections exhibit the
same behavior and if i plug a signal into a1 say in the top (b,c) section i
get that signal coming out of every other i/o jack in the other 2
sections.<br><br>I don't have a scope so i've been using my meter
and ears to try to see whats <br
output of the lm3900 going to pin 3 of 4007 switch i am measuring almost +6v
but none of these values ever changes with the
gate<br> cycle.<br><br>Any ideas ? As always suggestions and help are
so VERY much appreciated!<br>-Tony
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
right through to the pins of the chips, particularly the 4007s.
Ken
>Hi guys, I'm having some issues with this circuit and i'm out oftroubleshooting ideas.
>I've wired this up as a triple bi directional switch.wiring,traces,values and have also tried swapping all of the chips and
>
>I'm getting 12.5v into the lm3900 and +/-6v out.I've checked all the
transistors out.
>just get a weird mix of the 2 waveforms with no cv/gate trying to toggle
>If i try to send 2 separate inputs(a1,a2) out to 1 source(d) i basically
between the 2 outputs.When i put a cv/gate into the pulse input that signal
than gets mixed with the other 2 and still no toggle occurs.Also, i've
noticed if i only use a1 input i get what sounds like a inverse of the
waveform on a2.
>All 3 sections exhibit the same behavior and if i plug a signal into a1 sayin the top (b,c) section i get that signal coming out of every other i/o
jack in the other 2 sections.
>after the first 1m5 resistor i get -6v, when i measure the output of the
>I don't have a scope so i've been using my meter and ears to try to see whats
>happening.I tried to trace the pulse input (a) i used i 50/50 gate.Directly
lm3900 going to pin 3 of 4007 switch i am measuring almost +6v but none of
these values ever changes with the gate
> cycle.troubleshooting ideas.<br>I've wired this up as a triple bi directional
>
>Any ideas ? As always suggestions and help are so VERY much appreciated!
>-To
>
>
>
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>
>
>Hi guys, I'm having some issues with this circuit and i'm out of
switch.<br><br>I'm getting 12.5v into the lm3900 and +/-6v out.I've
checked all the wiring,traces,values and have also tried swapping all of the
chips and transistors out.<br><br>If i try to send 2 separate inputs(a1,a2)
out to 1 source(d) i basically just get a weird mix of the 2 waveforms with
no cv/gate trying to toggle between the 2 outputs.When i put a cv/gate into
the pulse input that signal than gets mixed with the other 2 and still no
toggle occurs.Also, i've noticed if i only use a1 input i get what
sounds like a inverse of the waveform on a2.<br>All 3 sections exhibit the
same behavior and if i plug a signal into a1 say in the top (b,c) section i
get that signal coming out of every other i/o jack in the other 2
sections.<br><br>I don't have a scope so i've been using my meter
and ears to try to see whats <br
>>happening.I tried to trace the pulse input (a) i used i 50/50gate.Directly after the first 1m5 resistor i get -6v, when i measure the
output of the lm3900 going to pin 3 of 4007 switch i am measuring almost +6v
but none of these values ever changes with the
gate<br> cycle.<br><br>Any ideas ? As always suggestions and help are
so VERY much appreciated!<br>-Tony
>_______________________________________________________________________
>
>
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>
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Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>