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Author Topic: Coin Counter  (Read 9378 times)

Etienne MacGyver

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Re: Coin Counter
« Reply #15 on: May 06, 2012, 01:03:54 PM »
mac paint ?  ;D
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simplesi

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Re: Coin Counter
« Reply #16 on: May 06, 2012, 03:15:20 PM »
Thanks guys. Really appreciate it.

@Level42... I am guessing that it is 5V because I used a 5V line and a ground and when applied to the counter it jumped. There was a wee spark...  all good though. In terms of a diode, what would I spec to get one? RS, Maplins? What would you recommend?

Si
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Etienne MacGyver

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Re: Coin Counter
« Reply #17 on: May 06, 2012, 05:36:02 PM »
I think a standard 1N4001 will be more than enough
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simplesi

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Re: Coin Counter
« Reply #18 on: May 06, 2012, 05:53:06 PM »
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level42

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Re: Coin Counter
« Reply #19 on: May 07, 2012, 12:09:27 AM »
General rule is to take a diode that can handle a reverse voltage of ten times the applied voltage, so if it is 5 Volts then a 1N4001 should be enough, althought it's exactly at the border. If you have to specially order anyway go for a 1N4002 which can handle 100V or 1N4003 @200V, there will hardly be a price difference and you apwill be on the safe side.

If I find some time tomorrow I will make another drawing to explain why such a diode is needed with one of my famous drawings ;)

Be sure to mount the diode directly on the terminals of the counter.
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