Voltage detector relay

Posted on Mar 6, 2013

While the battery is being charged, its voltage is measured at V. If the measured voltage is lower than the minimum the relay will be energized, that wiU connect the charger circuit. When the battery voltage runs over the maximum set point, the relay is deenergized and it will be held that way until the voltage decreases below the minimum when it will be connected again.

Voltage detector relay
Click here to download the full size of the above Circuit.

The voltage is lower than a threshold VB (low breaking voltage) the relay will be assumed that such a low voltage is due to one or several damaged battery components. Of course VB is much lower than the minimum set point.

Leave Comment

characters left:

Joao Fonseca   Oct 6, 2020

Hi, How the circuit can be modified to be used with a 12v relay? thank you

New Circuits



Popular Circuits

3 channel audio mixer (2N3904)
3 Watt FM transmitter
555 metal detector
automatic water level circuit
Sensor Circuits
C64DTV Color Fix
1Hz clock signal generator circuit