[sdiy] Voltage Feedback Resistors and Circuit Stability

[Chris McDowell]

I'm happy you said this. I had written out a post suggesting to build circuits before trying to optimize resistor noise performance. started sounding like the responses that miss the point and don't answer the op's question, so I deleted it hehe. 

yours didn't feel this way David, there was context and previous responses. I agree though, and I'm generally very happy when my hardware sounds "old" (usually jusy means noisey heh) I also use whatever value I have the most of on board, which often enough is 100k, with at least the option for caps in parallel with feedback resistors. 

Chris 

> On Nov 14, 2020, at 7:13 PM, David G Dixon <dixon at mail.ubc.ca> wrote:
> 
> 
> I've actually been accused of designing modules that sound "too clean" and I use lots of 100k resistors all over the place.  This is one of those problems that probably isn't really a problem.
> 
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Bernard Arthur Hutchins, Jr
> Sent: Saturday, November 14, 2020 11:36 AM
> To: synth-diy at synth-diy.org
> Subject: [sdiy] Voltage Feedback Resistors and Circuit Stability
> 
> [CAUTION: Non-UBC Email]
>  AWKWARD Questions  
> 
> (1)   In a synthesizer with standard signal levels of +/- 5, has anyone even HEARD Johnson noises, let alone been able to attribute it to a particular resistance?    
> 
>   
> 
> (2)   Given a 100k resistor, how does one (specific circuit/methodology please) observe/hear its Johnson noise as compared to a 10k? 
> 
> -Bernie                             
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