Power socket based on electricity measuring to control switch
A power socket, control switch technology, applied in electrical program control, emergency protection circuit devices for limiting overcurrent/overvoltage, program control in sequence/logic controllers, etc. Trigger point fluctuation, inaccurate judgment and other problems, to achieve the effect of eliminating harmonics, less electronic components, and high control accuracy
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[0035] Because the power socket of the existing control switch based on power measurement contains a shaping trigger, in fact, the power consumption of the main control device has a certain difference between the working state and the non-working state. The output signal after passing through the current detector and the rectification filter is used as the control source of the shaping flip-flop. Since the shaping flip-flop has a trigger threshold, for example, when the input signal is greater than a certain value, the shaped output signal will be generated; otherwise, the shaped output signal will not be generated. In the first case, when the main control device The power consumption is relatively small, the change difference of the power is very small, and the output signal after the rectification filter is not enough to trigger the shaping trigger to work, so the electronic switch cannot be turned on, so the controlled device plugged into the controlled socket is not The cu...
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