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From: nessus@nsc.UUCP (Kchula-Rrit)
Newsgroups: net.analog
Subject: Re: Big Capacitors
Message-ID: <1996@nsc.UUCP>
Date: Fri, 7-Dec-84 21:32:16 EST
Article-I.D.: nsc.1996
Posted: Fri Dec  7 21:32:16 1984
Date-Received: Sun, 9-Dec-84 02:18:46 EST
References: <1812@sun.uucp> <1215@hou4b.UUCP> <6171@brl-tgr.ARPA> <10102@watmath.UUCP> <542@voder.UUCP>
Organization: The Patriarchy of Kzin
Lines: 26

> [what is the bug's capacity for charged lines?]
> 
> Another way of looking at the battery vs capacitor controversy is the effect
> that a battery can have as a ripple filter. If you put a battery (may not have
> to be rechargeable) across a power supply, you'd tend to see very little AC in
> the load.
> -- 
> Gene E. Bloch (...!nsc!voder!gino)
> Mr Humility

*** REPLACE THIS LINE WITH YOUR MESSAGE ***
     Years ago I had a GE battery/AC-powered cassette recorder.  There was a
little slide switch in the compartment where the line cord, which was not
detachable, went.  One day the switch broke so that the recorder ran on either
battery XOR AC, can't remember which.  I, not knowing any better at the time,
soldered the six leads on the switch together.  Later on, I found out by
accident that the recorder {re}chargered the batteries when it was plugged in
to AC!!  Also, when the recorder was unplugged, the diodes in the power supply
were reverse-biased so the batteries did not discharge through the supply.
This arrangement charged carbon-zinc batteries better than a friend's battery
charger, so when one of my two sets of batteries went low, I swapped the sets
and everything worked fine!


                            Kchula-Rrit