Synth-DIY Yahoo! Groups Archives

asr problem

2006-02-19 by keith sterling

Hi All,

I just finished my analog shift register and it seems that the outputs
are modulated by the counter state. The asr is working but each output
fluctuates by about 10mV depending on the 4024's outputs. I think it's
due to something other than be due to mismatching of the output buffer
resistors, maybe 4052 quality? Anyone else ever see this type of
problem?

Thanks,

Keith

Re: asr problem

2006-02-20 by sasami@hotkey.net.au

Sounds like power-rail fluctuations. Try adding 100uF caps between +15 and 0
and -15 and 0. If that helps, start thinking about upgrading your PSU.

Ken

Show quoted textHide quoted text

>Hi All,
>
>I just finished my analog shift register and it seems that the outputs
>are modulated by the counter state. The asr is working but each output
>fluctuates by about 10mV depending on the 4024's outputs. I think it's
>due to something other than be due to mismatching of the output buffer
>resistors, maybe 4052 quality? Anyone else ever see this type of
>problem?
>
>Thanks,
>
>Keith
>
>
>
>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/>

Cgs synth

asr problem

asr problem

Re: asr problem

Move to quarantaine