[sdiy] Overdriving 4069UB

[Seb Francis]

Seb Francis wrote:

> Harry Bissell Jr wrote:
>
>> Just saw the schematic.
>>
>> I would AC couple into the first opamp, bias the non-inverting input
>> at 1/2Vcc and run the opamp on 0-15V (like a guitar stompbox). That
>> would cure all your worries about exceeding the CMOS limits
>> completely.
>>
> Wouldn't this introduce non-symmetrical hard clipping since the TL072 
> won't go down to negative rail voltage?

Ok, so thinking about it, I should be able to adjust the voltage on the 
non-inverting input to make the hard clipping symmetrical.

But it's even less components just to add a couple of schottky diodes.  
Are there drawbacks to doing it this way?

Seb