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nuckolls.bob(at)aeroelect
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 Posted: Fri Jul 19, 2013 9:00 am Post subject: Battery capacity tester- Why isn't there a flyback diode? |
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At 09:32 AM 7/19/2013, you wrote:
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<mrspudandcompany(at)verizon.net>
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Yes, a coil spike suppressor would e good idea.
Should have been there in the first place . . . sorry
'bout that.
| Quote: | Actually I've been searching the antique shops for an AC plug-in
clock and haven't been able to find one.
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| Quote: | Walmart has a couple of these clocks in the $10 range.
I bought one at my local store recently.
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But they are getting harder to find. The AA powered
quartz movement has all but totally captured the
wall/desk clock market.
The cap-tester I photographed last week measures
both battery voltage and elapsed time in software.
Bob . . .
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user9253
Joined: 28 Mar 2008
Posts: 1938
Location: Riley TWP Michigan
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| Posted: Sat Jul 20, 2013 7:56 am Post subject: Re: Battery capacity tester- Why isn't there a flyback di |
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A quartz clock with hands can be used instead of an AC powered clock. Strip the ends of two wires. Flatten the ends with a hammer and anvil. Make a sandwich of the two flattened wires with a paper or plastic insulator between them. Place this sandwich in the clock battery holder between the AA battery and a holder contact. Connect the other ends of the two wires to the tester relay.
Joe
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Joe Gores |
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