Thanks,
Next question. In the end I will check it myself on my scoot but what is the Voltage to the headlamp, at full throttle, without the battery in the circuit and with the headlamp disconnected? The circuit I'm designing will most likely use PWM (pulse width modulation) to limit the voltage at high rpms. Right now I'm in the SPICE stage. (SPICE is a simulation program for electronic designs that will give me a good idea of the power and losses incured.) A three terminal regulator whould be a very simple solution but it has one big problem. It has a loss through it of 1.2 volts (this is called insertion loss). What it means is the voltage to the lamp will always be 1.2 volts lower than the voltage going into the regulator. So the lamp at idle will be dimmer than without it in. The other problem is that the full 2.7 amps the bulb runs at will be absorbed by the bulb as opposed to the PWM method where very little power is absorbed by the circuit.
Hope this isn't to complex for some of you.
RobD
Posted on Sep 4, 2003, 8:00 AM from IP address 12.152.146.222
