Help - Pickup Circuit

[Barry Tisdale]

You could fire a one-shot w/ the inductive pickup.  A 74121 or 74123 would do it - as far as a circuit diagram goes, probably one of the Radio Shack books would have one.  'Engineer's Notebook' or 'Semiconductor Reference Guide' from RS have sample circuits.  I build lots of that stuff.

Barry

At 09:14 AM 4/29/99 +0200, you wrote:
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>Hi, Please help,
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>I have seen some of the discussions on the subject of Inductive pickups for
>spark.
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>I have a system where the signal from a inductive pickup is fed into the
>mic input of a pc, to count the sparks.
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>The problem is that the software gets confused, for every spark puls
>consists of a number of pulses that is picked up.
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>Can anybody please supply me with a circuit to convert the input to one
>single spike per spark ??
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>Thanks Michael.
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