Dan
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| posted on 15/6/09 at 11:29 AM |
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smiths clock wiring
I have a old smiths clock and would like to check it works (on the shelf) how can I do this please
it says on the front that its negative earth do I need to drop the battery voltage to carry out a check? how do I wire it.
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hicost blade
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| posted on 15/6/09 at 11:49 AM |
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http://www.caigauge.com/fittinginstructions.html
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02GF74
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| posted on 15/6/09 at 03:11 PM |
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there should be two terminals, hopefully labelled + and -; conect to 12 V and 0 V respectively. Note the 0 V tag may be connected directly to the
instrument case.
The negative earth means 0 V is earth - and has no implicationsfor what you are doing.
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britishtrident
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| posted on 15/6/09 at 03:31 PM |
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From about 1968 on a lot of tradditional car clocks also have a mercury battery in them to keep the clock ticking when the car battery is
disconnected for short periods.
If the clock dosen't work when connected the chances are the oil in the mechanism will have solidified -- usual cure is to wash it in solvent
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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