[sdiy] Sub for LM324?

[harrybissell]

Back 2u Batz (inline)

Batz Goodfortune wrote:

> Y-ellow Harry, Jim, Bill, 'n' All.
>
> At 03:37 PM 2/21/05 -0800, Harry Bissell Jr wrote:
>
> >huh ?   I'd just say that if a BBD had a very GOOD
> >life (karma) it would come back as an LM324...   :^P
> >
> >H^) harry
>
> Harry, They make good voltage buffers. Specially where single rail supplies
> are used. Envelope Generators are a good example.

Hah... I HAD them in my envelope generators (dual supply)... they latched up.
After several years, I might add.  Everything was FINE, then one day they would
trigger
once, then latch until power was removed.

(ok so NOW I know why that happened...)

But the funny thing was... once it happened no LM324 would work again... even
NOS of the same ILK (a small moose, btw).  NOS same date code as the ones that
worked for years... go figure

That's not the LM324s problem, its my problem... OK

> They don't make great audio amps and they're not overly fast.

NO they don't especially for the crossover distortion.  For those who LIKE
distortion, you will NOT like x-over distortion... it is a constant level at
zero cross
so that a large signal sounds OK but a small one sounds like the aftermath of a

boston-baked-bean dinner !

> But I've even successfully used
> them as integrating sample/holds.

Ack... awfil lot of input bias current for that... I tried them in a NON
integrating
S/H as a buffer and was amused to see the caps drift UP when in hold mode...
live and learn :^)

> I can only assume you'd been trying to
> use them for something they weren't designed for. Audio or, GASP, video
> applications perhaps? Maybe something really weird even I can't think of?
> But this begs the question...

I used them in one of my most successful industrial designs... now in the
seventh
incarnation (do one REALLY good design, then milk it for all its worth !) That
was a single supply 24VDC design, and the LM324 was my first choice for the
deed !!!

>
>
> If you tried to push the envelope with a 324, what on Earth did you try and
> do with a BBD that makes you hate them so? Harry, they just don't make good
> voltage regulators.
>
> I can just see Harry writing a new and indispensable. electronic tome.
>
> 101 THINGS TO DO WITH A (yet to be) DEAD BBD. By Harry Bissell

1: Freshly dead... makes a great little hotplate. Make fried hummingbird's eggs
on it

or how about...

Why do BBDs sound so bad ???

So blind people can hate them too...

> (102 things if you actually try putting one in circuit.)
>
> Be absolutely Icebox.
>
>  willdo. chilling now :^P

H^) harry