Voltage monitor for car battery

[passion1]

Hi,

Don't forget to suppress the voltage spikes! A cars electrical system can generate spikes easily above 50v. Try to take the measurement points as close to the battery as possible. Also damp the takeoff point from the resistor divider with a small capacitor (10uF). I would also use some inductors in the supply line to protect the regulator and PIC.

Bob

Bob

Thanks for the advice! Could you be specific with regard to where the capacitor must be placed as well as the inductors. If possible, inductance values would be appreciated. (I'm rather new to electronics!)

THANKS!