Driving power source for power system fault detecting device
A fault detection and power system technology, applied in control/regulation systems, output power conversion devices, electrical components, etc., can solve problems such as large ripple coefficient, low efficiency, complex circuits, etc., to improve quality and reduce radio frequency interference , The effect of simplifying the circuit structure
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[0015] Such as figure 1 As shown, the present invention mainly consists of a diode rectifier U, a power amplifier P1, a transformer T, a switching filter circuit connected in series between the positive output terminal of the diode rectifier U and the non-inverting terminal of the power amplifier P1, and the primary side coil L1 of the transformer T The sliding regulator connected with the sliding tap of the transformer T, the power output circuit connected with the secondary coil L2 of the transformer T, the transformer feedback circuit connected with the secondary coil L3 of the transformer T, and the diode rectifier U and the switching filter circuit It is composed of a power logic regulator circuit connected with the power amplifier P1.
[0016] Wherein, the power logic regulator circuit is composed of power amplifier P2, NAND gate IC1, NAND gate IC2, NAND gate IC3, NAND gate IC4, diode D4, resistor R3, resistor R4, resistor R5, resistor R6, Composed of resistor R7, resis...
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