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Discussion Topic:
Input to coil
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silverchief |
08-20-2013 @ 9:53 AM
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Senior
Posts: 522
Joined: Oct 2009
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I want to see if my coil is receiving at least 3 volts during an operating temperature start. Where do I attach the leads from my voltmeter?
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kubes40 |
08-20-2013 @ 12:02 PM
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Senior
Posts: 3406
Joined: Oct 2009
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One lead goes to the battery side of coil, the other lead to ground.
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supereal |
08-20-2013 @ 12:39 PM
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Senior
Posts: 6819
Joined: Oct 2009
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The points have to be closed to get a meaningful reading. Otherwise, you will see battery voltage. When the car is running, the input is pulsed thru the points to ground, and most consumer voltmeters can't register the RMS (root mean square)of the supply to give a true reading. The coil presents an impedance to the circuit, rather thsn a pure resistance, so a static reading will only tell you if the windings are intact.
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