Integrated circuit with separable leakage circuit and prepaid circuit

Abstract

An integrated circuit with a separable electric leakage circuit and a prepayment circuit includes a power module, an electric leakage detection module and a prepayment delay breaking module, wherein the power module includes a two-stage step type surge absorption loop, a rectification loop and a release electric leakage detection module; the electric leakage detection module is connected with the power module through a switch, the electric leakage detection module includes an electric leakage signal sorting circuit and an electric leakage detection control circuit, and the electric leakage sorting circuit includes a glass-sealed bidirectional trigger diode used for absorbing surge current; and the prepayment delay breaking module is connected with the input end of a prepayment electricity meter, and includes a charging circuit, a discharging circuit and a delay breaking circuit. The two-stage step type surge absorption loop absorbs surge voltage, the glass-sealed bidirectional trigger diode absorbs surge current, the switch controls and selects electric leakage and prepayment functions, and the charging and discharging circuits of the prepayment delay breaking module realize high-precision delay breaking, thereby realizing improvement of an anti-interference capability of a breaker while electric leakage and prepayment functions are achieved in the same breaker, and facilitating selection of a user.

Description

technical field [0001] The invention relates to the field of power circuits, in particular to an integrated circuit with a separable leakage circuit and a prepayment circuit. Background technique [0002] With the continuous deepening of the transformation of the national grid, the use of electric energy metering devices such as special circuit breakers for prepaid meters has become more and more popular. At the same time, people's concept of electricity consumption has also changed. people's lives. [0003] Currently, the leakage circuit breaker with prepaid function used in the market is generally used in combination with two circuit boards: one with the function of prepaid meter and the other with leakage function. This combination leads to complicated wiring and low reliability. Or, there is a circuit breaker with a combination of leakage and prepaid functions, but the combination of leakage and prepaid functions forms a common ground crosstalk, resulting in poor anti-i...

AI Technical Summary

Problems solved by technology

[0003] Currently, leakage circuit breakers with prepaid function used in the market are generally used in combination of two circuit boards: one with prepaid meter function and the other with leakage function. This combination leads to complicated wiring and low reliability.

Or, there is a circuit breaker with a combination of leakage and prepaid functions, but the combination of leakage and prepaid functions forms a common ground crosstalk, resulting in poor anti-interference performance of the circuit breaker of the whole machine, and it is impossible to flexibly choose between the prepaid function and the leakage function

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