Re: Electrical question

Posted by John T on July 25, 2006 at 18:49:39 from (66.244.90.5):

In Reply to: Re: Electrical question posted by Nebraska Cowman on July 25, 2006 at 10:23:07:

Cowman, for sure you wont get slammed from me, theres a lot of truth in what you say. A 12 volt coil has around 3 ohms of resistance in the primary while a 6 volt coil has but around 1.5 ohms. In the 12 volt it either has wire of a higher resistance or else more of it which is why it has 3 ohms of resistance. They may have made some coils that actually had a resistor built in but most all Ive seen and am familiar with have none but instead just more wire or wire having more resistance. The reason they make n use 6 and 12 volt coils and the reason why extra series external ballast is required if you use a 6 volt coil on a 12 volt system is to get a TOTAL of 3 ohms in the primary circuit (coil PLUS any ballast) in order to limit the current the points must switch to around 4 amps or so max so they dont burn up prematurely. So the so called 12 volt coils may not be able to store much more energy then the 6 although there are indeed DIFFERENCES in 6 and 12 volt coils in the difference in the resistance of the primary windings measured between their lil + and - terminals.

Hope this helps yall. Best Wishes n God Bless

John T

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