Alternating current power control device
US5994883A · kind A · utility
Inventor
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/40
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An alternating current power control device for controlling the amount of power energy supplied to an electric load by controlling the cycle numbers of an alternating current power source in a predetermined cycle period is disclosed. The control device includes a voltage zero-crossing detecting circuit, a current detector, a power adjusting circuit, a control unit, an output driving circuit, and a switching circuit. The switching circuit is connected in series between the alternating current power source and the load. The control unit generates a control signal to control the switching circuit according to a voltage counting pulses generated by the voltage zero-crossing detecting circuit, a current counting pulse generated by the current detector, and a power adjusting signal generated by the power adjusting circuit to determine the cycle numbers of the alternating current power source supplied to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.