Power-stealing-preventing power supply circuit

Abstract

The invention provides a power-stealing-preventing power supply circuit. Two grades of RC filtering are additionally applied to the front end of a voltage stabilizing chip, and impact voltage at the front end of the voltage stabilizing chip can be removed when an electric stick is electromagnetically radiated, so that the effect of protecting the voltage stabilizing chip is realized; two grades of the RC filtering are additionally applied to the rear end of the voltage stabilizing chip, so that impact voltage at the rear end of the voltage stabilizing chip can be removed during electromagnetic radiation and the voltage stabilizing chip is protected; and furthermore, the whole circuit is not influenced by the impact voltage when the electric stick is electromagnetically radiated, halting and resetting phenomena of an electric energy meter are not caused and the loss of electric quantity also can be prevented.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an anti-stealing power supply circuit. Background technique [0002] my country is known as a country with a large population and consumes a huge amount of electricity every year; and the measurement of electric energy involves all aspects of industrial and agricultural production and daily life. Accurate measurement of electric energy is very important for national economic work. With the rapid development of the electric power industry, various There are more and more electric machinery and household appliances, and the electric energy meters serving them are more practical. [0003] At present, due to the preciousness and scarcity of electric resources, especially the act of stealing electricity must be eliminated; but now there is no alternative but the incidents of stealing electricity are increasing, and the means of stealing electricity are also tending to be diversifie...

AI Technical Summary

Problems solved by technology

[0003] At present, due to the preciousness and scarcity of electric resources, especially the act of stealing electricity must be eliminated; but now there is no alternative but the incidents of stealing electricity are increasing, and the means of stealing electricity are also tending to be diversified; When electromagnetic radiation occurs, the energy meter will crash and reset, and the power will be lost when it is reset, which will damage the national interests.

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