[sdiy] Linearized 2164 VCA Warning

[Neil Johnson]

Hi David,

> The one and only time I ever tried to replace a TL072 with an OP07,  
> it got
> so hot I had to shut the synth off (this was the current servo in  
> my 2164
> Expo VCO, and the current was bloody small).  I pried it out of the  
> socket,
> put the cheap-ass TL072 back in, and it's been oscillating happily  
> ever
> since (in tune and rock steady, I might add)!

If I read that correctly, you put an OP07 in the same socket?
I assume you know that whereas the TL072 is a dual, the OP07 is a  
single, so completely different pinout.
No surprise at all it got hot.

> I'll stick with the cheapos, thanks!

Fair enough!

Cheers,
Neil
--
http://www.njohnson.co.uk