Cgs synth

Also make sure you are using the right sort of tranny! I had people with
this problem on another project - and they had used the wrong sort of tranny.

>Are the trannies situated like the silk screen on the pcb or reversed? They
>should be reversed.
>
>
>
>On Tuesday, October 9, 2012, ch1nard wrote:
>
>> **
>>
>>
>> Okay, i have been staring at this for almost a week without making any
>> progress so its time to start asking around for help on figuring out what
>> might be wrong with my DUSG build
>>
>> I am running this off +/-15v power supply and i have all the connections
>> appear to be correct with no magic smoke escaping
>>
>> What is happening is that the output lights are lit up constantly.
>> When i hook it up to a scope it appears that both halves are cycling
>> (triangle) at about only 300mV p/p
>> -fiddling with the rise/fall gives minor variations but is still a
>> triangle. (never hits saw or ramp)
>> -feeding LFO into VC in shows the same minor variances as fiddling with
>> the rise/fall knobs. bipolar control seems to work
>> -feeding a signal IN combines the signal with this triangle oscillation
>> -trig and end do nothing
>>
>> now everything 'appears' to be wired up correctly and there were a couple
>> of lifted pads that i was able to jumper patch around.
>> building this as part of a 'best of cgs' BOG panel, so the wiring is well
>> documented.
>>
>> I have verified +/- voltage being delivered to all the TL072's and
>> verified + voltage for the LM3900's
>> ground appears to be delivered as well.
>> all the trans are correct value and orientation (2N3904 and 2N3906) where
>> applicable
>>
>> Anyways, eyes are too tired to look at this anymore tonight...
>> time to smoke a bowl and watch some doctor who.
>>
>>
>>
>
>
>--
>________________
>rico loverde
>415.596.6255
>ricoloverde.com
>
>
>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
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