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Converting Rotary Switch to Digitally control soft switch

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pradipkhare

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Hi,

Currently I am using a Rotary switch, as shown in the image attached. The purpose of this switch is to select a source from multiple Sine wave sources.

I want to move to soft switch(s) instead of mechanical switch, in other word Micro controller based. Since this is not just a logical voltage output (like transistor output or straightforward) and hence having difficulty to design.

Requesting your help in this regard?

Thanks in advance,
Pradip
 

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  • Rotary Switch.jpg
    Rotary Switch.jpg
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Depending on your input voltage levels you can use an analog switch like>
**broken link removed**
where you can select up to 8 inputs with 3 binary signals . Or just 4 inputs with 2 binary signals.
If your signal are out of the range for analog switches or you need high linearity, you can use small signal relays with a similar decoding scheme (2 bits) or no decoder using 4 bits.
 

" I want to move to soft switch(s) ", a soft switch is a fast fade!!. A software controlled switch is a hard switch controlled by software. If you want one of these try a 4066 chip. Comments, keep yout audio to less the .9VCC p-p, not infinite off/on ratio, but pretty good. Bias the audio to .5 VCC.
Frank
 

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