Intelligent device for voltage dip protection
A voltage drop and smart device technology, applied in circuit devices, protection against undervoltage or no voltage, electrical components, etc., can solve problems such as frequent connection or disconnection of AC contactors, circuit impact, etc., to reduce work Effects of load, extended start and stop times, extended range of adaptation
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[0014] Such as figure 1 As shown, the present invention provides an intelligent device for voltage drop protection, including a high-power rectifier circuit D1 and a rectifier circuit D2 connected in parallel to AC mains, and is characterized in that: the output power of the high-power rectifier circuit D1 is one After passing the DC step-down module R1, it is added to the coil C of the AC contactor through the first switch tube A. The coil C is provided with a clamp control circuit I for judging the state of the AC contactor. The clamp control The output terminal of the circuit I is connected to the single-chip microcomputer S through a conversion control circuit J; the other path of the output power of the high-power rectifier circuit D1 is connected to a switching power supply module M through a switching tube module K, and the switching power supply module M includes Four outputs, the first output is applied to the contactor coil loop via the first voltage regulator circuit...
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