Isn't that just a simple induction sensor clamped to the spark plug cable?Originally Posted by KG4CGC
Isn't that just a simple induction sensor clamped to the spark plug cable?
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Yes, and one would need to step up and condition the voltage - rather than the current - to get a usable reference. Something like a JFET would work nicely without excessively loading the pickup coil and reducing its output. For TTL gating purposes you're aiming for 4.5-5.2v on peaks.
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