Capacitive sense toggle touch dimmer
First Claim
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1. A touch dimmer circuit comprising:
- a controller coupled to a measurement capacitor and also coupled via protection circuitry to a touch pad whose change in capacitance is detected by the controller so as to control current flow through a load connected to the dimmer and to a power source.
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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.
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Citations
19 Claims
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1. A touch dimmer circuit comprising:
a controller coupled to a measurement capacitor and also coupled via protection circuitry to a touch pad whose change in capacitance is detected by the controller so as to control current flow through a load connected to the dimmer and to a power source. - View Dependent Claims (2, 3, 4, 5)
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6. A toggle dimmer circuit comprising:
a controller coupled to a first measurement capacitor and also coupled via a first protection circuitry to a first touch pad whose change in capacitance is detected by the controller when the controller causes a transfer of charge from the first touch pad to the first measurement capacitor to occur, and the controller is coupled to a second measurement capacitor and also coupled via a second protection circuitry to a second touch pad whose change in capacitance is detected by the controller when the controller causes a transfer of charge from the second touch pad to the second measurement capacitor to occur. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A toggle dimmer circuit comprising:
a controller coupled to a measurement capacitor and also coupled via a first protection circuitry to a first touch pad whose change in capacitance is detected by the controller when the controller causes a transfer of charge from the first touch pad to the measurement capacitor to occur, and the controller is coupled via a second protection circuitry to a second touch pad whose change in capacitance is detected by the controller when the controller causes a transfer of charge from the second touch pad to the measurement capacitor to occur. - View Dependent Claims (14, 15, 16, 17, 18, 19)
Specification