More Inductive Pickup

[Michael F. Sargent]

> Of course, hooking this rig up to an MSD ignition would count
> every spark pulse (something like 20/spark event at idle) and
> screw up any counting logic circuit.  One fix is a retriggerable
> monostable, like a 555, with a one-shot period slightly longer than 
> period between MSD pulses.

If you're using an MSD, don't measure the output from the box, measure the
input (which is already at a much lower level and is a single pulse). I talked
to MSD and posted a description of the input signal. It'll be somewhere back
in previous messages on this list.
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| Michael F. Sargent   | Net: msargent at gallium.com | Phone: 1(613)721-0902 |
| Gallium Software Inc.|                           | FAX:   1(613)721-1278 |
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