Hold battery discharge protector

The utility model discloses a hold battery discharge protector, including resistance R4, resistance R3, triode VT1, diode D1, electric capacity C1, one -way silicon controlled rectifier VS1 and emitting diode LED1, it is anodal that resistance R3 connects battery E respectively, triode VT1 projecting pole, diode D1 negative pole and output vo, diode D1 anodal connecting resistance R1 and resistance R2 respectively, one -way silicon controlled rectifier VS1's the A utmost point is connected to the resistance R1 other end, triode VT1 base and triode VT2 base are connected respectively to the resistance R2 other end, electric capacity C2 and resistance R4 are connected respectively to triode VT1 collecting electrode. The utility model discloses hold battery discharge protector can effectively prevent the battery overdischarge, and circuit structure is simple, and is with low costs, small, does not adopt any chip element moreover, and stability is high, and the interference killing feature is strong, especially adapted using widely.