Capacitive sense toggle touch dimmer
US7834856B2 · kind B2 · utility
111Cited by
37References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2005 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Apr 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B39/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A touch/toggle dimmer circuit that includes a controller coupled to at least one measurement capacitor whose capacitance is known, and at least one touch pad where the controller is configured by an algorithm to measure changes in the capacitance of the touch pad in response to a user touching the pad. These measurements are used to adjust the power delivered to a load independent of the polarity of the connection between the power source and the dimmer circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.