Power-down control conversion circuit
A technology for converting circuits and circuits, applied in circuit devices, electrical components, emergency power supply arrangements, etc., can solve the problems of not meeting the requirements of venues and tunnel lighting, not meeting the requirements, and taking about 2 minutes, achieving low cost, circuit Stable performance, avoid high cost effect
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[0011] The structural details of the present invention are described in detail below in conjunction with the accompanying drawings:
[0012] like figure 1 As shown, it is a circuit block diagram of an embodiment of the present invention, including a MCU single-chip microcomputer control circuit, a mains input sampling circuit, a bypass static switch and an inverter static switch. The bypass static switch between the AC output is turned on or off, and the output inverter control signal controls the on or off of the inverter static switch between the UPS inverter and the AC output, and the sampling signal of the input sampling circuit of the mains input is input. , input the inverter working status signal output by the UPS inverter.
[0013] The above-mentioned mains input sampling circuit includes a mains input sine wave amplitude sampling circuit and a mains input sine wave frequency sampling circuit, and correspondingly, the above-mentioned sampling signal includes an amplit...
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