AC contactor
An AC contactor and connection technology, applied in relays, electrical components, circuits, etc., can solve the problems of many AC contactors, complex circuit structure, single control method, etc., achieve accurate time, simple circuit structure, and maintain stability Effect
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Embodiment 1
[0032] Such as figure 1 As shown, this embodiment provides an AC contactor, including a power filter module, a rectifier module connected to the output end of the power filter module, an action execution module respectively connected to the output end of the power filter module and the output end of the rectifier module, and a For the control module of the action execution module, the action execution module includes four unidirectional thyristors, namely unidirectional thyristor QD1, unidirectional thyristor QD2, unidirectional thyristor QD3, and unidirectional thyristor QD4. , and the electromagnetic coil L, the anode of the one-way thyristor QD1 is connected to the output end of the rectifier module, the cathode is connected to the first end of the electromagnetic coil L, and the anode of the one-way thyristor QD4 is connected to the second end of the electromagnetic coil L , the cathode is grounded, the anode of the one-way thyristor QD2 is connected to the first end of th...
Embodiment 2
[0046] Such as figure 2 As shown, this embodiment provides an AC contactor, and the difference from the above-mentioned Embodiment 1 is that the AC contactor also includes a voltage stabilizing module for providing a stable voltage to the control module, and the input terminal of the voltage stabilizing module is rectified The diode is connected to the output terminal of the power filter module, and the output terminal is connected to the power input terminal of the control module (that is, the first input terminal of the control module), that is, the 220V mains alternating current directly provides voltage to the voltage stabilizing module after being filtered. In addition, the input terminal of the voltage stabilizing module can also be connected with a DC power supply or connected with other AC power supplies through a rectifier diode.
[0047] Specifically, the voltage stabilizing module includes a first-stage voltage stabilizing circuit and a second-stage voltage stabili...
Embodiment 3
[0052] Such as image 3 As shown, this embodiment provides an AC contactor, which is different from the above-mentioned embodiment 2 in that: the AC contactor also includes a release energy storage module for supplying power to the control module and the action execution module when the power supply is cut off. Specifically, the release energy storage module includes a diode D1, a diode D2, a capacitor CD1, and a capacitor CD2. The AC contactor also includes a thermistor RT1 and a resistor R4. One end of the thermistor RT1 is connected to the output end of the power filter module, and the other end Connect to the anode of diode D1, the cathode of diode D1 is connected to the anode of one-way thyristor QD3, the anode of diode D2 is connected to the anode of diode D1, the cathode is connected to capacitor CD2 and grounded, and one end of capacitor CD1 is connected to the cathode of diode D1 The other end is connected to the input end of the voltage stabilizing module, and the cath...
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