Low Battery cut off adjustable

265

06:04:31

This circuit is intended to cut power to things like auxiliary lighting on a vehicle while the vehicle is off. To prevent draining of the battery. 

It was designed for LED strobe lights for emergency vehicles.

Adjustable on off voltages with potentiometer.  Change is pproximately 1.6v.

Off @ < 12 volts to save battery

reset @ > 13.6 volts when vehicle is started or battery is changed

   Made for use with 5v relays but the actual values of the resistors will vary depending on the relay used.

Not intended for charging batteries...

published 9 years ago

ramnmqz

9 years ago

Red means it is charging, and green means it is done charging?

mb335

9 years ago

No, red means it has cut off the power, and green means that power is flowing normally.

mb335

9 years ago

By the way, power sources NEVER go up or down in voltage or current by themselves, therefore this circuit doesn't "charge", per say, but instead increases and decreases as you turn it's knob. I am not criticizing your words, ramnmqz, but just making sure you understand. I could teach you a lot more, actually. Just look at my circuits.

BillyT

9 years ago

mb335, it please look at this circuit again, if the indicated power supply was a battery and this circuit was placed across it. Just imagine if that relay then attached a charger to the battery when it discharged to a nominated level, and removed it when the battery charged to a nominated voltage level.

Sirrush

9 years ago

I should have been more clear in the description. This circuit is intended to cut off things like auxiliary lighting on a vehicle. While using them while the vehicle is off. It was designed for LED strobe lights for emergency vehicles.

BillyT

9 years ago

There is all sorts of possibilities for this circuit, if one has any imagination.

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