Surge current suppression circuit and method
A surge current and suppression circuit technology, applied in battery circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, circuit devices, etc. , the effect of inrush current suppression
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[0024] A surge current suppression circuit, comprising a charging circuit and a digital control chip, the charging circuit is used to obtain alternating current and charge an output capacitor; the charging circuit includes a thyristor and a driving circuit, the anode end of the thyristor is used for taking electricity from the alternating current line, and the thyristor The cathode terminal of the thyristor is used to send power to the output capacitor, and the gate terminal of the thyristor obtains the turn-on driving voltage from the AC line through the driving circuit.
[0025] The drive circuit includes a voltage divider circuit and a switch circuit connected in series; the switch circuit is used to turn on or off the drive circuit according to the control signal of the digital control chip, the cathode end of the thyristor is connected to the low voltage point of the voltage divider circuit, and the gate of the thyristor is connected. The terminal is connected to the high ...
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