Electrical switching module
First Claim
Patent Images
1. A circuit comprising:
- an electrical switching device configured to control power to a load;
a zero-crossing detector configured to detect a zero-crossing associated with the electrical switching device; and
a controller configured to actuate the electrical switching device in response to the zero-crossing detector and a calibration time associated with an actuation of the electrical switching device;
wherein the controller is configured to measure a delay time between an energization of the electrical switching device and an actuation of the electrical switching device.
1 Assignment
0 Petitions
Accused Products
Abstract
A module including a case; an electrical switching device configured to control power to a load; and a controller coupled to the electrical switching device. The electrical switching device and the controller are substantially encapsulated by the case. Functionality of the module can be exposed through a communication interface in the case.
85 Citations
26 Claims
-
1. A circuit comprising:
-
an electrical switching device configured to control power to a load; a zero-crossing detector configured to detect a zero-crossing associated with the electrical switching device; and a controller configured to actuate the electrical switching device in response to the zero-crossing detector and a calibration time associated with an actuation of the electrical switching device; wherein the controller is configured to measure a delay time between an energization of the electrical switching device and an actuation of the electrical switching device. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method comprising:
-
detecting a zero-crossing associated with an electrical switching device; actuating the electrical switching device in response to the zero-crossing and a stored actuation time; measuring a delay time between an energization of the electrical switching device and an actuation of the electrical switching device; and adjusting the stored actuation time in response to the measured delay time. - View Dependent Claims (8, 9, 10)
-
-
11. A circuit comprising:
-
a clamp configured to clamp an alternating current (AC) signal; a pulse generator configured to generate a pulse in response to an edge of the clamped AC signal; and an isolator coupled to the pulse generator and configured to be actuated by the pulse. - View Dependent Claims (12, 13, 14)
-
-
15. A method comprising:
-
clamping an alternating current (AC) signal to generate a clamped AC signal; generating a pulse in response to an edge of the clamped AC signal; and propagating the pulse through an isolator. - View Dependent Claims (16, 17, 18)
-
-
19. A circuit, comprising:
-
a transistor including a control node configured to drive a dimming output in response to a voltage on the control node; at least two isolators configured to cause each direct current (DC) current path from the control node to be substantially non-conducting when a power supply is disabled, the at least two isolators comprising; a first isolator configured to be substantially non-conducting when a power supply is disabled; and a second isolator configured to be substantially non-conducting when the power supply is disabled; and the circuit further comprises a resistor network coupled between the first isolator and the second isolator. - View Dependent Claims (20, 21)
-
-
22. A circuit comprising:
-
a transistor including a control node configured to drive a dimming output in response to a voltage on the control node; at least one isolator configured to cause each direct current (DC) current path from the control node to be substantially non-conducting when a power supply is disabled; and a capacitor coupled between the control node and the dimming output.
-
-
23. A method comprising:
-
coupling a dimming signal to a control node through a first isolator; driving a dimming output in response to the control node; coupling the dimming output to the control node through a second isolator; and substantially disabling the first isolator and a second isolator if a power supply is disabled. - View Dependent Claims (24, 25, 26)
-
Specification