From: Watson 'Atto Parsec' Name
Subject: Re: Limiting total wattage for a constant-current dummy load?
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
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Date: Mon, 11 Nov 2002 19:48:36 -0800
NNTP-Posting-Date: Mon, 11 Nov 2002 20:47:25 PST
Organization: InReach Internet
In article <email@example.com>,
jmuchow@SPAMMENOTcamlight.com talked about...
> Ouch! And my head was just beginning to stop spinning from the first
> circuit. :-)
> Yea, I wasn't quite sure where I was going to get a dual-gang,
> multi-turn pot, but I sure was going to search hard for it.
> One use I had for the constant-current circuit I have is as a battery
> discharger. The V-Fet voltage changes, but definitely not faster than
> 2V/sec. I can play with the R/C constants and find a nice balance
> I'll take a look at the 4066 too (it's digital!!). It looks like I
> need to make sure that whatever switch I use is non-shorting.
> Hmmm...if I didn't need continuous current adjustment, couldn't I use
> a 2-pole rotary switch with discrete resistors (instead of the
> dual-gang pot)?
> Thanks again!
> John Muchow
But so far I haven't seen a value mentioned for this hypothetical dual gang
super-duper whiz-bang pot. You could use a dual 6 position rotary switch,
with a single turn dual gang pot for fine adjustment. But what have we got
here, a 100 ohm, or a 100kohm pot?
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you put NOSPAM in the
Subject: line. alondra101 hotmail.com
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Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html