Bike rectifier.

[Diabolical Artificer]

Thanks Sam. Had a bit of a brainwave this morning. As there is no field coil and any form of regulation is going to be crude, IE some form of shunt or zener, why not disconnect the regulator when not needed? See dia att. I thought about using the headlight as a sense resistor and putting another sense R in series with the battery. Voltage from these goes to a control, EG opamp or comparator that controls a switch that cuts either the rectifiers earth or the DC + to the battery.

If the weather is good today i'll take a few readings and have a play.

Andy.