Posted by Jerry/MT on August 11, 2010 at 19:15:58 from (206.183.116.129):
In Reply to: ignition resistance posted by Sparks on August 11, 2010 at 09:49:16:
That other site provided you with a lot of meaningless verbage. There"s nothing in that statement that will help you understand the primary igniton circuit. Most of these tractor ignitions systems are designed for about 4 amps max primary current. If you have a 6v system, that means the total primary reistance should be ~ 1.6 ohms. I have a 6 v coil that I measured the resisitance of and it was 1.6 ohms on the primary side. I have a 12 V coil and it has 3.2 ohms of primary resistance. So either one when installed in the appropriate primary circuit will provide a nominal 4 amps of primary current. That"s why your IC-14SB coil is called a 12V coil. It"s used in a a 12V primary ignition circuit and DOES NOT REQUIRE A RESISTOR. And that"s what Dell is telling you in his usual way.
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