The comprehensive protector has one automatically-controlled charge circuit comprising voltage sampler, inverse current preventing tube circuit, bistable switch circuit, voltage clamping and protecting circuit, current limiting and rectifying circuit, filtering circuit, etc. as wall as one automatically-controlled discharge circuit comprising discharge voltage monitoring switch, automatic emergency control circuit, switch, load, etc. It features the wide applicable voltage range of the automatically-controlled charge circuit, and long service life of accumulator. The discharge circuit results in low production cost of emergency lamp. |