>What is the purpose of the processor inputs on this vco?They are modulation inputs. They can be adjusted for negative or positive
operation.
Ken
>_______________________________________________________________________
>--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
>>
>> The wave should remain at a constant height for all incoming
>voltages. This
>> suggests that there is something wrong with the current source (the dual
>> transistor and the parts around it). The current source appears to be
>> accting as a voltage source at the moment.
>>
>> Ken
>>
>> >Thanks for the reply,
>> >I'm double checking everything but nothing seems abnormal. When i
>> >apply CV it changes octave correctly and can be tuned but the lower
>> >notes have so much gain that the upper haves of the signal are clipped
>> >and the output is about 6V pk-pk. when i play the higher notes the
>> >gain starts to decrease. two or three octaves up the amplitude is less
>> >than 1V pk-pk. Should i get a clean saw with this? Is decreasing gain
>> >normal for the higher octaves? I'm going to go on the assumption that
>> >i have an improperly placed resistor. Does amyone have any suggestions
>> >or things to check to narrow down the fault?
>> >
>> >--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
>> >>
>> >> I suggest you look elsewhere for the fault - more likely a wrongly
>> >placed
>> >> component. Using 2% resistors will at most cause a slight
>difference in
>> >> stability. It certainly won't be the difference between it working
>> >or not.
>> >>
>> >> Ken
>> >>
>> >> >Hey. I just built the ken stone vco and i am trying to test it.
>I seem
>> >> >to be having a problem. The oscillator with no CV applied looks
>> >> >clipped. When i add higher CV voltages the amplitude decreases
>and it
>> >> >is no longer clipped. It also does not give a clean saw output. It
>> >> >looks more like a half rectified sinewave. I believe my problem
>might
>> >> >lie in that i used alot of 2% metal film resistors since i had
>alot of
>> >> >them already. Does anyone have any sugestions.
>> >> >Thanks
>> >> >Josh
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >The CGS Modular Synth home page: http://www.cgs.synth.net/
>> >> >
>> >> >Yahoo! Groups Links
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >>
>_______________________________________________________________________
>> >> Ken Stone sasami@h... or sasami@c...
>> >> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>> >> Australian Miniature Horses & Ponies
><http://www.blaze.net.au/~sasami/>
>> >>
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >The CGS Modular Synth home page: http://www.cgs.synth.net/
>> >
>> >Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> _______________________________________________________________________
>> Ken Stone sasami@h... or sasami@c...
>> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>
>
>
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>