Path: utzoo!attcan!uunet!pilchuck!seahcx!phred!brianr
From: brianr@phred.UUCP (Brian Reese)
Newsgroups: sci.electronics
Subject: Re: Nicads in parallel
Message-ID: <3185@phred.UUCP>
Date: 12 Jul 90 17:26:58 GMT
References: <3902@ash31.UUCP> <1990Jul10.150245.9902@zoo.toronto.edu>
Reply-To: brianr@phred.UUCP (Brian Reese)
Organization: <1990Jul10.150245.9902@zoo.toronto.edu>o
Lines: 21

In article <1990Jul10.150245.9902@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
}>In article <3902@ash31.UUCP> svoboda@motcid.UUCP (David Svoboda) writes:
}>Why can't nicads be used in parallel in order to increase the current
}>capacity? ...
}
}There is a general problem with paralleling voltage sources:  they aren't
}all guaranteed to have precisely the same output voltage, and various
}troublesome things can happen as a result.  A muscular nicad might try
}to charge a feeble one, for example.

What's the harm in tying them all together using forward biased diodes?
Sure, it'll result in a diode drop, but if the load can accomodate it,
that shouldn't be a problem.

Brian 

-- 
Brian Reese                           uw-beaver!pilchuck!seahcx!phred!brianr
Physio Control Corp., Redmond, Wa.                         brianr@phred.UUCP
"Sticks and stones may break my bones, but whips and chains excite me!"
All opinions are manf. suggested and are subject to change without notice.