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aesmith · 06-10-18, 08:04 AM

It would be interesting to measure the AC current at a certain engine speed, with head lights on or off. If the current was unchanged it would support the theory that the alternator works at a standard rate, and excess power is dumped in the RR.

Not sure about the theory behind voltage dropping from the O/C figure when current is drawn, I had always assumed it was the case as an analogy with a motor drawing more current as it's put under load. Is it purely down to actual resistive load, or is there something directly related to the fact that power is being drawn? I know that regulators for small wind turbines vary the current drawn to hit the optimum power point for any given conditions.

06-10-18, 08:04 AM	#45
aesmith Member Join Date: Mar 2013 Location: Aberdeenshire Posts: 966	Re: K5 Pointy Headlight Connector Burning out It would be interesting to measure the AC current at a certain engine speed, with head lights on or off. If the current was unchanged it would support the theory that the alternator works at a standard rate, and excess power is dumped in the RR. Not sure about the theory behind voltage dropping from the O/C figure when current is drawn, I had always assumed it was the case as an analogy with a motor drawing more current as it's put under load. Is it purely down to actual resistive load, or is there something directly related to the fact that power is being drawn? I know that regulators for small wind turbines vary the current drawn to hit the optimum power point for any given conditions.