Posted by 36 coupe on April 02, 2011 at 03:50:09 from (199.2.58.130):
In Reply to: Re: where is J D ???/ posted by Jon Hagen on March 27, 2011 at 22:11:44:
The coil with an internal resistor is a fable.There is no room in the coil case for a resistor.A 40 watt resistor is about 3 inchs long.The coil could not take the heat from the resistor.Since the coil is operating in an ac circuit we have to call it impedance.A 12 volt coil will need a change in wire size or turns of wire.A speaker with 8 ohms impedance will measure 3 to 4 ohms DC resistance.I retired from electronics at 65 and at 73 much of the knowledge is fading away.I note that smart people can be very touchy and will explode when they are proven wrong.One fellow posted that he ran a tractor for 5 years with a dead alternator and didnt fix it until the bearings locked up and ruined the belt.I said that good mechanics wouldnt do this, I knew that he had done tv service work.You had to do good work on color sets.There was no room for shoddy work.
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