[sdiy] Last question about LFOs

[Richard Wentk]

On 8 Apr 2009, at 23:52, Matthew Smith wrote:

> Quoth Magnus Danielson at 2009-04-09 08:00...
>> Try the 100 nF, then maybe 220 nF or 330 nF.
>
> I know that I've come into this conversation at least half-way  
> through,
> but David's question raised one of my own:
>
> If I have an oscillator that has switchable capacitors, is there  
> any way
> to switch these electronically using some sort of logic control rather
> than having a physical switch?

You can use CMOS switches, but be wary of peak current loading - too  
many mA will fry the FETs in an analog switch.

Richard