Controllable-load circuit for use with a load control device
US11743983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2020 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Aug 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/196
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A load control device for controlling the amount of power delivered from an AC power source to an electrical load is operable to conduct enough current through a thyristor of a connected dimmer switch to exceed rated latching and holding currents of the thyristor. The load control device comprises a controllable-load circuit operable to conduct a controllable-load current through the thyristor of the dimmer switch. The load control device disables the controllable-load circuit when the phase-control voltage received from the dimmer switch is a reverse phase-control waveform. When the phase-control voltage received from the dimmer switch is a forward phase-control waveform, the load control device is operable to decrease the magnitude of the controllable-load current so as to conduct only enough current as is required in order to exceed rated latching and holding currents of the thyristor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.