Flex Fuel
Posted: Fri Dec 17, 2010 12:25 pm
The 10K resistor for flex fuel sensor should be what wattage?
scnicholl,
Any commonly available watt (1/8, 1/6, 1/4, 1/2) resistor that is 10K Ohms will work. The resistor is there to limit the current supplied by a pull-up voltage. This pull-up is feed into a high impedance (think of it as high resistance) input and grounded by the sensor. When grounded, the current flow is small (I = V/R = ~5/10000 = 0.5 milliamps) and the power is minimal (P = IV = 0.0005*5 = 2.5 milliwatts).
Lance.