I know you can use PWM to adjust average power level in a device such as a motor or light bulb, but can you use it to power something from a supply beyond its specifications?
E.g. I have a 6Vdc light bulb and a 30Vdc power supply. Can I use a 20% duty cycle PWM to power the bulb, or will the bursts of 30Vdc damage it?
(Let's just say for the sake of argument I can't use a different power supply, but the high currents involved make resistive voltage dropping underirable, wasting lots of power in heat and needing a very large, expensive, heatsunk resistor)
E.g. I have a 6Vdc light bulb and a 30Vdc power supply. Can I use a 20% duty cycle PWM to power the bulb, or will the bursts of 30Vdc damage it?
(Let's just say for the sake of argument I can't use a different power supply, but the high currents involved make resistive voltage dropping underirable, wasting lots of power in heat and needing a very large, expensive, heatsunk resistor)