I would like to build a test circuit for Ford flat Pack Ignition modules. The module has (2) pin terminals for input and a standard spark plug connector on the opposite end. The module grounds to chassis when bolted to the engine.
On a known "Good" Coil, I measure very low resistance across the pins, less than a few (.3 -1.0 ) ohms. The Secondary measures 5K-15K Ohms). I tried connecting a 12V battery across the pins and manually pulsing the coil. I did get a slight flicker with a neon bulb test lamp at the spark plug end to the ground connection, but I expected a whole lot more spark.
I even tried a TV Horz Output pulse from my Sencore Television Analyzer , with no measurable results. I believe the impedance too low.
I'm assuming the input is low-impedance, and low frequency (engine speed). Do you think I need a transistor switching circuit and a different pulse rate to test properly
On a known "Good" Coil, I measure very low resistance across the pins, less than a few (.3 -1.0 ) ohms. The Secondary measures 5K-15K Ohms). I tried connecting a 12V battery across the pins and manually pulsing the coil. I did get a slight flicker with a neon bulb test lamp at the spark plug end to the ground connection, but I expected a whole lot more spark.
I even tried a TV Horz Output pulse from my Sencore Television Analyzer , with no measurable results. I believe the impedance too low.
I'm assuming the input is low-impedance, and low frequency (engine speed). Do you think I need a transistor switching circuit and a different pulse rate to test properly
