Cgs synth

On 1/1/13 3:24 PM, Richard Brewster wrote:
> http://www.cgs.synth.net/modules/cgs113_vcm.html
>
> The third wave multiplier has one section where pin 8 of an LM3900 has a
> 220K resistor coming from the input buffer. It is shown on the
> schematic as having a feedback resistor to pin 9 of 1M, and an 820K to
> minus V. I am confused about the values of those two resistors. The
> board labels both as 1M. And the pictorial of the board shows in 820K
> in RED as the feedback resistor. So the RED correction on the pictorial
> is reverse of the schematic. So, which position gets the 820K and which
> the 1M?
>
> Thanks,
>
> Richard Brewster
> http://pugix.com
>
>

On 2013-01-02 5:40 PM, <sasami@...> wrote:

**




>This boils down to: Is the schematic correct? If not, then what's right?
God knows. No two of the bastards seem to be the same. Just build it as per
the PCB.

Ken



>
>Thanks,
>
>Richard
>
>On 1/1/13 3:24 PM, Richard Brewster wrote:
>> http://www.cgs.synth.net/mo...
>------------------------------------


>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>
__________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>




[Non-text portions of this message have been removed]

On 1/2/13 5:40 PM, sasami@... wrote:
>> This boils down to: Is the schematic correct? If not, then what's right?
> God knows. No two of the bastards seem to be the same. Just build it as per
> the PCB.
>
> Ken
>
>> Thanks,
>>
>> Richard
>>
>> On 1/1/13 3:24 PM, Richard Brewster wrote:
>>> http://www.cgs.synth.net/modules/cgs113_vcm.html
>>>
>>> The third wave multiplier has one section where pin 8 of an LM3900 has a
>>> 220K resistor coming from the input buffer. It is shown on the
>>> schematic as having a feedback resistor to pin 9 of 1M, and an 820K to
>>> minus V. I am confused about the values of those two resistors. The
>>> board labels both as 1M. And the pictorial of the board shows in 820K
>>> in RED as the feedback resistor. So the RED correction on the pictorial
>>> is reverse of the schematic. So, which position gets the 820K and which
>>> the 1M?
>>>
>>> Thanks,
>>>
>>> Richard Brewster
>>> http://pugix.com
>>>
>>>
>>
>>
>> ------------------------------------
>>
>> The CGS Modular Synth home page: http://www.cgs.synth.net/
>> Yahoo! Groups Links
>>
>>
>>
>>
> _______________________________________________________________________
> Ken Stone sasami@... otherunicorn@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>
>
>