Battery High Low Voltage Cutoff Circuit

If you use this circuit for autocut on over 6v then use 6 v relay and circuit need 6v.

Battery high low voltage cutoff circuit.

This reduces the current required from the regulated supply. Q1 inverts this action so that the on state is high. See figure 3 zener and resistor network gives reference voltage to the inverting terminal ve of op amp. Only you have to change the 5 1v zener diode value according to the battery voltage type.

For example if you want to use the circuit with 6v battery then simply change the zener diode value to 3 1v. High voltage low voltage cut off circuit. An ideal low battery cut off circuit should have zero on resistance zero power consumption when the switch is off and zero power. As explained above the transistors sense the presence of the dangerous voltage levels respectively and activate.

Where v low is the low voltage shutoff threshold. So it helps to protect the circuit damage by the high voltage. As shown in the circuit diagram a couple of transistor stages are integrated together along with an output relay which is able to perform the function of super safe voltage guard equipment. It must be when the battery voltage drops to 50 volts and not 42 volts on the battery.

Only one thing i am much more conservative about the lower limit voltage level when the load must be cut off i e. An almost ideal low battery cutoff circuit draws only 1 2 μa. Q1 and r11 also level shifts the high voltage state to the 10 14 volt supply level rather than the regulated v cc. I found all your circuit and projects interesting but please i need a special assistance.

By proper choice of r1 and r2 this circuit will work well for shut off voltages in the range of about 4 5 to 10 v. Hello swagatam thank you for the 48v solar battery charger circuit with high low cut off and i am going to try it out. The circuit can be used with any type of batteries for example 12v 9v 6v 5v etc. This phenomenon is used as a decision for switching the relay and to give cutoff in a low voltage situation.

Before using this circuit set the preset and check the relay or output to at which input voltage level relay gets activated.