Chip for detection of basic electric leakage on residual current protector
US11650251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Mar 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a chip for detection of basic electric leakage on a residual current protector. Basic electric leakage can be understood as an electric leakage signal which is generated during normal operation of an electrical appliance and cannot cause a residual current protector to trip out. The chip for detection of basic electric leakage includes a peak detection circuit, a 20 ms clock generator, a 60 ms delay circuit, a 2.5 V reference voltage module, a register module, a comparator module, a counter, a digital subtractor, an analog-to-digital converter (ADC) module, a digital-to-analog converter (DAC) module, an analog adder/analog subtractor, a selection circuit, and a circuit for delayed resetting. The present disclosure can identify and eliminate a basic electric leakage signal from an input electric leakage signal, and will not affect normal operation of a load during detection, determination, storage, and output of the electric leakage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.