Battery power failure protection circuit diagram

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

LC03-3.3 SOP8 TVS Static Protection 3.3V

A battery power failure protection circuit, the manual switch is a snoring protection, about 30 seconds apart. The fixed switch is permanently protected by a trip. "Shutdown and wait for a while to restart." The battery voltage drops to 9.6v protection action, and the LED indicator lights up.

Battery power failure protection circuit

Power failure protection is a functional design that protects the facility from normal operation or damage without power supply.

The picture only draws the power-deficient protection part, does not involve other circuits, and can not enlarge the picture to enlarge.