Control of a triac for the starting of a motor
US7514897B2 · kind B2 · utility
1Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2006 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Jan 25, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P1/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a circuit for controlling a triac intended to be series-connected with a resistive element of positive temperature coefficient or which is at least capacitive, and a winding for starting an asynchronous motor, for supply by an A.C. voltage, the present invention including the steps of: detecting a voltage representative of the voltage across the series connection of the element and of the triac; comparing this detected voltage with respect to a threshold; and blocking a turning back on of the triac when the threshold has been exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.