Systems and methods for dimming control using TRIAC dimmers

摘要

System and method for dimming control of one or more light emitting diodes. An example system includes one or more signal processing components configured to receive a first signal associated with a TRIAC dimmer, process information associated with the first signal, determine whether the TRIAC dimmer is in a first condition or a second condition, generate a second signal based on at least information associated with the first signal, and send the second signal to a switch. The one or more signal processing components are further configured to, if the TRIAC dimmer is determined to be in the first condition, generate the second signal to cause the switch to be opened and closed corresponding to a modulation frequency.

主权项

1. A system for dimming control of one or more light emitting diodes, the system comprising:
one or more signal processing components configured to receive a first signal associated with a TRIAC dimmer, process information associated with the first signal, determine whether the TRIAC dimmer is in a first condition, a second condition, or a third condition based on at least information associated with the first signal, generate a second signal based on at least information associated with the first signal, and send the second signal to a switch; wherein the one or more signal processing components are further configured to:
if the TRIAC dimmer is determined to be in the first condition, generate the second signal to cause the switch to be opened and closed corresponding to a modulation frequency;if the TRIAC dimmer is determined to be in the second condition, generate the second signal to cause the switch to remain closed for a first period of time until at least the TRIAC dimmer changes from the second condition to the first condition, the first period of time being larger than a modulation period corresponding to the modulation frequency; andif the TRIAC dimmer is determined to be in the third condition, generate the second signal to cause the switch to remain open for a second period of time, the second period of time being larger than the modulation period.