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Saturday, April 13, 2013

Low Voltage Cut Out


This circuit will notice when the voltage of a 12v battery reaches a low degree. This is to forestall deep-discharge or possibly to prevent a vehicle battery turning into discharged  to some extent where it will no longer begin a car. This circuit is different to anything else up to now offered. It has HYSTERESIS. Hysteresis is a function the place the higher and decrease noticeion-points are separated by means of a niche. 

Circuit diagram :

Low Voltage Cut-Out Circuit Diagram

Normally,  the circuit will deactivate the relay when the voltage is 10v and when the burden is eliminated. The battery voltage will rise relatively by using as little as 50mV and switch the circuit ON once more. This is referred to as \"Hunting.\" The off/on timing has been diminished by way of adding the 100u. But to stop this totally from taking place, a 10R to 47R is positioned in the emitter lead. The circuit will turn off at 10v however will no longer flip back on except 10.6v when a 33R is in the emitter. The worth of this resistor and the turn-on and turn-off voltages will also depend upon the resistance of the relay. 


Author : Colin Michel - Copyright : 200 Transistor Circuits

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