you could also use a simple 1n4001 diode in series with the positive wire, to drop .7 of a volt for each diode you use, doing it this way still lets you draw exactly the same amount of current (about 500ma), and it Purely drops voltage and nothing else, whereas a resistor in line will have an effect on current also.
you could also use a simple 1n4001 diode in series with the positive wire, to drop .7 of a volt for each diode you use, doing it this way still lets you draw exactly the same amount of current (about 500ma), and it Purely drops voltage and nothing else, whereas a resistor in line will have an effect on current also.
Do you want to regulate only the fan speed or to regulate the speed of the fan based on the temperature of the surrounding ? Or you just need to reduce the speed without the possibility of regulation ?
