Car Battery Monitor with 3 LED

Car Battery Monitor with 3 LED
Car Battery Monitor circuit description: This is a circuit diagram of the 3 LED bar graph type battery monitor ideal for monitoring the voltage level of the car battery voltage with battery. (more…)

Flashing battery monitor

Flashing battery monitor
Here is a simple battery monitor circuit in which the LED will continue flashing until battery voltage is above the level. Transistors Q1 and Q2 are wired as an astable multivibrator circuit. This flashing battery monitor circuit can operate from a variety of voltages from 6V to12V. (more…)