[sdiy] uA726s off the bay for my mini do not work

[JH.]

Well considering how a heater servo loop works, it makes some sense:

The chip might increase the heater current dramatically in order to bring 
the chip from freezing to hot again, and in the process overheat locally 
(hot spot, whatever).
It's a shame it's not protected / current limited against something like 
that, though.

JH.


----- Original Message ----- 
From: "Steve Ridley" <spr at spridley.freeserve.co.uk>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, January 31, 2008 5:50 PM
Subject: RE: [sdiy] uA726s off the bay for my mini do not work



> I can't believe you did that. I fried the one in my
> Trident the exact same way (cooling spray).

I can't believe _you_ did that (c:


I've never known freezer spray to kill anything
which wasn't already poorly, providing it's used
sensibly.  If you blast something from hot to
freezing in an instant, you can expect problems,
but taking it down in small bursts (as I did)
shouldn't be a big deal.

If you squirt it all over the place, you can end
up with condensation causing trouble too.



Steve


(freeze a jolly good fellow...)


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