6 Nov
2011
6 Nov
'11
5:10 p.m.
On 11/06/2011 12:55 AM, leaknoil wrote:
I love op amps.
Me too!
Actually I'd rather talk about them. I was a
recording
engineer once upon a time that was an all Neve shop. You'll be all like
, "Yea whatever" Anyway.
Not at all. I've never done the studio side, but I've done some
small-venue sound reinforcement work. Great stuff.
Man the fights we had over TL072 vs 5534 etc vs
all the *magic* that somehow magically flows through individual
transistors was funny.
*snicker*
I was beaten with a small piece of rubber hose when I
didn't tow class A
line. No class A circuit ever made a bad song sound good. Sometimes it
made a great song better though.
"Class A is the way", man! ;)
For the past couple of days I've been designing a driver circuit for
a liquid conductivity sensor. It basically pumps low-voltage AC at
about 1KHz (to avoid polarization of the liquid) through a conductivity
cell and turns that into a 4-20mA sensor interface signal. The value
must also be temperature-compensated; there's a platinum RTD in the
conductivity cell for that. So, a small gaggle of op-amps and way too
much math. But I love it anyway. :) I hope to have the design finished
by tomorrow night.
-Dave
--
Dave McGuire
New Kensington, PA