SYSTEMS AND METHODS FOR BLEEDER CONTROL RELATED TO LIGHTING EMITTING DIODES
First Claim
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1. A system for controlling one or more light emitting diodes, the system comprising:
- a bleeder configured to receive a rectified voltage generated by a rectifying bridge; and
a dimmer detector configured to;
receive an input voltage generated by a voltage divider, the voltage divider being configured to receive the rectified voltage, the input voltage indicating a magnitude of the rectified voltage;
determine whether or not the rectified voltage is associated with a TRIAC dimmer; and
output a control signal to the bleeder;
wherein the dimmer detector is further configured to determine that the rectified voltage is associated with a TRIAC dimmer if a first time duration for the rectified voltage to increase from a first voltage to a second voltage is smaller than a first predetermined duration or a second time duration for the rectified voltage to decrease from the second voltage to the first voltage is smaller than a second predetermined duration;
wherein the dimmer detector is further configured to;
generate the control signal to turn on the bleeder if the rectified voltage is determined to be associated with a TRIAC dimmer so that the bleeder generates a first current, the first current being larger than zero in magnitude; and
generate the control signal to turn off the bleeder if the rectified voltage is determined not to be associated with any TRIAC dimmer so that the bleeder does not generate the first current.
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Abstract
System and method for controlling one or more light emitting diodes. For example, the system includes a bleeder configured to receive a rectified voltage generated by a rectifying bridge, and a dimmer detector configured to receive an input voltage generated by a voltage divider, determine whether or not the rectified voltage is associated with a TRIAC dimmer, and output a control signal to the bleeder. The voltage divider is configured to receive the rectified voltage, and the input voltage indicates a magnitude of the rectified voltage.
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Citations
35 Claims
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1. A system for controlling one or more light emitting diodes, the system comprising:
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a bleeder configured to receive a rectified voltage generated by a rectifying bridge; and a dimmer detector configured to; receive an input voltage generated by a voltage divider, the voltage divider being configured to receive the rectified voltage, the input voltage indicating a magnitude of the rectified voltage; determine whether or not the rectified voltage is associated with a TRIAC dimmer; and output a control signal to the bleeder; wherein the dimmer detector is further configured to determine that the rectified voltage is associated with a TRIAC dimmer if a first time duration for the rectified voltage to increase from a first voltage to a second voltage is smaller than a first predetermined duration or a second time duration for the rectified voltage to decrease from the second voltage to the first voltage is smaller than a second predetermined duration; wherein the dimmer detector is further configured to; generate the control signal to turn on the bleeder if the rectified voltage is determined to be associated with a TRIAC dimmer so that the bleeder generates a first current, the first current being larger than zero in magnitude; and generate the control signal to turn off the bleeder if the rectified voltage is determined not to be associated with any TRIAC dimmer so that the bleeder does not generate the first current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling one or more light emitting diodes, the method comprising:
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receiving an input voltage, the input voltage indicating a magnitude of a rectified voltage generated by a rectifying bridge; determining whether or not the rectified voltage is associated with a TRIAC dimmer; and outputting a control signal to a bleeder; wherein the determining whether or not the rectified voltage is associated with a TRIAC dimmer includes; determining that the rectified voltage is associated with a TRIAC dimmer if a first time duration for the rectified voltage to increase from a first voltage to a second voltage is smaller than a first predetermined duration or a second time duration for the rectified voltage to decrease from the second voltage to the first voltage is smaller than a second predetermined duration; wherein the outputting a control signal to a bleeder includes; generating the control signal to turn on the bleeder if the rectified voltage is determined to be associated with a TRIAC dimmer so that the bleeder generates a first current, the first current being larger than zero in magnitude; and generating the control signal to turn off the bleeder if the rectified voltage is determined not to be associated with any TRIAC dimmer so that the bleeder does not generate the first current. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system for controlling one or more light emitting diodes, the system comprising:
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a bleeder configured to receive a rectified voltage generated by a rectifying bridge; and a dimmer detector configured to; receive an input voltage generated by a voltage divider, the voltage divider being configured to receive a first voltage received by the rectifying bridge, the input voltage indicating a magnitude of the first voltage; determine whether or not the rectified voltage is associated with a TRIAC dimmer; and output a control signal to the bleeder; wherein the dimmer detector is further configured to determine that the rectified voltage is associated with a TRIAC dimmer if a first time duration for an absolute value of the first voltage to increase from a first voltage to a second voltage is smaller than a first predetermined duration or a second time duration for the absolute value of the first voltage to decrease from the second voltage to the first voltage is smaller than a second predetermined duration; wherein the dimmer detector is further configured to; generate the control signal to turn on the bleeder if the rectified voltage is determined to be associated with a TRIAC dimmer so that the bleeder generates a first current, the first current being larger than zero in magnitude; and generate the control signal to turn off the bleeder if the rectified voltage is determined not to be associated with any TRIAC dimmer so that the bleeder does not generate the first current. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for controlling one or more light emitting diodes, the method comprising:
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receiving an input voltage, the input voltage indicating a magnitude of a first voltage received by a rectifying bridge, the rectifying bridge being configured to generate a rectified voltage; determining whether or not the rectified voltage is associated with a TRIAC dimmer; and outputting a control signal to a bleeder; wherein the determining whether or not the rectified voltage is associated with a TRIAC dimmer includes; determining that the rectified voltage is associated with a TRIAC dimmer if a first time duration for an absolute value of the first voltage to increase from a first voltage to a second voltage is smaller than a first predetermined duration or a second time duration for the absolute value of the first voltage to decrease from the second voltage to the first voltage is smaller than a second predetermined duration; wherein the outputting a control signal to a bleeder includes; generating the control signal to turn on the bleeder if the rectified voltage is determined to be associated with a TRIAC dimmer so that the bleeder generates a first current, the first current being larger than zero in magnitude; and generating the control signal to turn off the bleeder if the rectified voltage is determined not to be associated with any TRIAC dimmer so that the bleeder does not generate the first current. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification