Speaking of Merlins

[The Dark force of dance]

Y-ellow Y'all.
        If memory serves correct, zeners drift with temperature. Is this so
and by how much? The point Paul made about using an external reference on a
723 is not lost on me at the moment. I'm working with battery power and even
though we're talking 12 volts, I'd like an extremely low reference. About 3
volts. So I'm toying with the idea of using an externally pumped reference.
But I don't want it to drift too much with temperature. The idea is that it
won't drop out till the battery, a small 12 volt SLA, gets below 3 volts.

Also, This little package will get quite hot under certain circumstances so
I want to put a temperature controlled fan on it. I've got an old CPU fan I
can adapt. I was wondering if anyone has any good ideas about sensing the
heatsink temperature with a transistor so that it can control the fan. It
doesn't necessarily have to even switch the fan in and out. If it's easier,
it could just redirect current to the fan as the heatsink gets hotter. The
hotter it gets the faster the fan turns. The idea is that if there's no need
for cooling it can save a bit of battery by not running the fan.

It would take me too long to explain what this is all about but trust me,
it's electronic music related. Juergen's 5 volt EGs and LFOs are concepts
not lost on me at this point. But as usual I wannna get this thing out of
the way as quickly as possible so I'm hoping that someone could point me at
something that will do the job.

Thanks in advance.

Be absolutely Icebox.
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