555 low power consumption monostable circuit diagram

As shown in the figure, the circuit includes a four-2 input NAND gate CD 4011 and a CMOS type 555, so the power consumption is extremely small whether it is static or during the output high level timing. Gate 3 and gate 4 of CD 4011 form an RS flip-flop. Since the entire circuit is a closed loop, the timing pulse width depends on the RC time constant, that is, Td=1.1R1C1.

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