Re: Converting something that runs on batteries...
From: Greg (ranger714_at_gmail.com)
Date: 07/20/04
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Date: 20 Jul 2004 15:07:34 -0700
deanbrnz@yahoo.ca (bigbossfan80) wrote in message news:<a86dc8c2.0407030514.1cb40006@posting.google.com>...
> I have a friend who recently had a baby. The baby always sleeps in
> this automatic rocking thingy that runs on 4 "D" batteries(6 volts
> DC). Because they use this thing at least 10 hours a day or more,
> they are going through batteries like crazy!
>
> I want to do him a favor and convert it so that it runs on regular AC
> power from a standard wall socket. I know that basically all I have
> to do is buy a '6 Volt AC-DC Adapter', cut the connector end off,
> strip some wire insulation from each end(+ and -), and wire it into
> where the "D" batteries connect, making sure I match the polarity etc.
>
> BUT, my only question is with regards to amperage draw. My local
> Radio Shack sells three different '6 Volt AC-DC Adapters', one is
> rated at 1800 mA, one is 800 mA, and the other is 300 mA. Is there
> someway that I can measure how many milli-amps this automatic rocker
> thing draws? I have a Digital Multi-Meter and ASSUME that I can
> somehow use it to measure the amperage draw, but am not 100% sure??
>
> Does anyone have any help or suggestions?
>
> THANKS!:)
I've actually had the same idea with the baby swing we use with my
4-month-old daughter, but i've also been looking around at maybe a
larger 6-volt battery that could run for weeks, and possibly recharge
off of a seperate charger while the baby sleeps in her crib.
Of course, we use her swing about an hour a day, but i've heard of
some babies who just can't sleep in bassinets or cribs, but will sleep
in a swing. Glad that isn't us.
Also, the spring-loaded, wind-up type of swing generally last only
about 5 minutes or so, and the ratcheting winder was painfully loud...
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