Battery charge monitoring system.

302

04:22:54

The given circuit is an OP-AMP based battery charge monitor.

Circuit constantly watches the power supply voltage and if the supply voltage goes "below" a certain voltage (6V in our case) it will indicate by glowing the LED.

Circuit is constructed using OP-AMP under comparator mode. Non-inverting terminal of the amplifier is biased to reference voltage(3V) using a zener diode. The non inverting terminal is connected to a voltage divider that devides input voltage equally.

If the input voltage drops below 6V then, voltage divider output drops below 3v and hence triggers the output of OP-AMP to go HIGH.

published 5 years ago

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