Posted by Janicholson on September 29, 2018 at 15:45:46 from (97.112.33.126):
In Reply to: Re: what does it do posted by Grandpa's Fords on September 29, 2018 at 07:06:47:
A condenser (capacitor) is like two sheets of aluminum foil with one under, and one over a piece of waxed paper, then waxed paper on top of that. It is then rolled up into a cigar. Leads are attached to each foil, and there it is. Voltage applied across the leads charged electrons into the negative side, and pulls electrons out of the positive side. The electrons stare across the waxed paper and wish they were over there. The holes where electrons would like to be also migrate toward the wax paper. If the power is taken away, they remain for a long long time. In fact they are used as a battery like thing called a Capattery. Google it. The only way they can be discharged is by being in a circuit. The condenser in an ignition system is in a full time circuit when the ignition is on and the points open, the circuit includes the battery, wiring, key, resistor (if used) the coil primary, and the lead to the points, then the other grounded side is from the condenser case to the engine metal and back through the battery ground. when the points are closed (ignition off or on) the points short out the capacitor directly by grounding the lead where it connects. Capatterys are used to start 16 cylinder General Electric diesel Locomotives. They can be as large as a refrigerator. They are electronically discharged through the locomotives generator, using it as a motor, and spinning it up to start. Capatterys are happy when cold, so no issue with starting power. (Diesel starting is more complex than I have described, but that is the essentials of it. Jim
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