Coil turns vs resistance and voltage output
Coil turns vs resistance and voltage output
(OP)
I have a dirt bike stator and I'm trying to understand the correlation between coil turns, wire size, resistance, output voltage and amps.
These readings were taken from the coils alone. They were not connected to the voltage regulator or CDI box. Both voltage readings were taken at the same RPM.
Bike head light coil = 172 ohms ~12 VAC
Bike ignition coil = 60 ohms ~ 40 VAC
I know that the more turns a coil has the higher the voltage output. If the head light coil has more resistance I would think it has more wire turns. But how is it that the head light creates less voltage. Does the wire size make a difference?
These readings were taken from the coils alone. They were not connected to the voltage regulator or CDI box. Both voltage readings were taken at the same RPM.
Bike head light coil = 172 ohms ~12 VAC
Bike ignition coil = 60 ohms ~ 40 VAC
I know that the more turns a coil has the higher the voltage output. If the head light coil has more resistance I would think it has more wire turns. But how is it that the head light creates less voltage. Does the wire size make a difference?





RE: Coil turns vs resistance and voltage output
http://www.powerstream.com/Wire_Size.htm
RE: Coil turns vs resistance and voltage output
RE: Coil turns vs resistance and voltage output
Yes, that is correct. If you have two coils that are the same physical dimensions and one is wound with more turns of a smaller gauge wire the resistance will be higher. If your two coils have the same magnet and air gap the coil with the higher number of turns will have a higher voltage at the same speed.