I'm not real clear on how to calculate the required wattage of resistor required when wiring up a voltage divider.
I know how to wire one up and I have tested it with 1/4 watt resistors. But I want to make sure I have the correct wattage.
I wire up
12v > 470ohm>150 ohm > ground


2.9v
I'll get 2.9 volts from the circuit, exactly what I want.
so do I need 1/4 or 1/2 watt resistors? well i'm not real clear.
Any one?