[sdiy] ASM-1 VCO LM311 Question

[patchell]

    If I remember correctly, on the LM311, Pin 1,4 need to go to -15,
and 5,6,8 need to go to +15.  Pin 1, I seem to remember, is the emitter
of the output transistor.  In order to turn the discharge FET off, the
output needs to go to a large negative voltage.

Jaco Sloof NewbieSynthBuilder wrote:

> Maybe obvious but i'll check N-E-way:
>
> Pin 1 of the LM311 goes to ground on the datasheet
>
> do i have to tie pin 1 to ground as well, in the ASM-1 VCO?
>
> Also, i detected an (non significant) error in the VCO schem pdf
>
> from pin 7 of the LM311, a resistor goes to ground, 3k3
>
> R18 to be precise, but this already exists:
>
> R18 from LM311 pin 2, to CA3140 pin 6...
>
> is this error of ehhh "hazard" to the VCO's workings?
>
> much thanx in advance, and greetings CJ Wacko Jacko
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--
 -Jim
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