[sdiy] Outputs and Impedances

[Tony K]

I stand corrected. I came to the same realization moments after I wrote it but only now found time to log in. 
Thanks for clearing that up .

I apologize to the OP as well for any confusion this may have caused.

 But I thought about what you said about signals going to normally closed jacks and it makes sense that some sort of short-circuit protection be used in addition to the op-amp's internal protection. Jung recommends 200 ohms in the 1st edition. 

Tony ( is his face ever red) K

> On Oct 26, 2018, at 8:02 AM, mskala at ansuz.sooke.bc.ca wrote:
> 
>> On Fri, 26 Oct 2018, Mikko Helin wrote:
>> pe 26. lokak. 2018 klo 7.02 Tony K <weplar at gmail.com> kirjoitti:
>>      If you look on monosynth schematics manufacturers often used 1 K
>>      resistors to feed subsequent stages. as load resistors.
>>      Especially some sort of signal mixing was desired ( transistor
> 
>> Also sometimes 1k resistors in front of TL07/8xs are used to prevent
>> phase-reversal...
> 
> Neither of these cases seems relevant to the original poster's question
> about putting resistors between the output of a single op amp and three
> resistive voltage dividers it's driving.  There's no mixing; the voltage
> dividers themselves provide a load; and this is the output, not the input,
> so phase reversal shouldn't be an issue.
> 
> -- 
> Matthew Skala
> mskala at ansuz.sooke.bc.ca                 People before tribes.
> http://ansuz.sooke.bc.ca/
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