Method and Apparatus of Converting Output of Triac Dimmer to Control Operations of LED Lighting

• US 20120248993A1
• Filed: 04/01/2011
• Published: 10/04/2012
• Est. Priority Date: 04/01/2011
• Status: Abandoned Application

• Current Assignee: Lei Yueh Enterprise Co., Ltd.
• Original Assignee: Lei Yueh Enterprise Co., Ltd.
• Inventors: Lin, Yuan
• Application Number:
  US13/078,487
• Publication Number:
  US 20120248993A1
• Time in Patent Office: Days
• US Class Current: 315/160
• CPC Class Codes: H05B 45/37 Converter circuits

Abstract

Various embodiments of the present disclosure pertain to converting output of a triode-for-alternating-current (TRIAC) dimmer to adjust lighting of one or more light-emitting diodes (LEDs). In one aspect, a method may receive a user-adjustable first signal from a dimmer, the first signal having an alternating current (AC) parameter that is adjustable by a user input to the dimmer; convert the first signal to a second signal that has a direct current (DC) parameter; and control operations of a load based at least in part on the second signal.

Claims

1. A method comprising:

receiving a user-adjustable first signal from a dimmer, the first signal having an alternating current (AC) parameter that is adjustable by a user input to the dimmer;

converting the first signal to a second signal that has a direct current (DC) parameter; and

controlling operations of a load based at least in part on the second signal.

2. The method as recited in claim 1, wherein converting the first signal to a second signal comprises converting the first signal to a low-voltage DC signal using a photocoupler, a transformer, a heat-sensing circuit, a motor speed-sensing circuit, a resistor-capacitor (RC) circuit, a circuit that senses an electrical or magnetic parameter of the first signal, or a combination thereof.

3. The method as recited in claim 1, wherein controlling operations of a load based at least in part on the second signal comprises generating a third signal based at least in part on the second signal to control the load, the third signal comprising a pulse-width modulated (PWM) signal, a parallel digital signal, a serial digital signal, a signal having a DC voltage variable between 0 volt and 10 volt, a voltage signal having varying DC voltage levels, a signal representative of an impedance value, or a combination thereof.

4. The method as recited in claim 1, wherein controlling operations of a load based at least in part on the second signal comprises:

receiving a first source of power at a controller unit that is coupled to the power supply unit;

receiving a second source of power at a power supply unit, the second source of power different from the first source of power; and

generating a third signal, by the controller unit based on the second signal, to adjust an output of the power supply unit which controls the operations of the load.

5. The method as recited in claim 1, wherein:

receiving a user-adjustable first signal from a dimmer comprises receiving the user-adjustable first signal from a triode-for-alternating-current (TRIAC) dimmer; and

controlling operations of a load based at least in part on the second signal comprises controlling an intensity of emitted light, a color of the emitted light, or both, of one or more light-emitting diodes (LEDs) based at least in part on the second signal.

6. The method as recited in claim 1, wherein:

receiving a user-adjustable first signal from a dimmer comprises receiving a respective user-adjustable first signal from each of a plurality of triode-for-alternating-current (TRIAC) dimmers, each of the plurality of first signals having a respective AC parameter that is adjustable by a respective user input to the respective TRIAC dimmer;

converting the first signal to a second signal that has a DC parameter comprises generating one or more second signals each of which having a DC parameter based on a combination of the plurality of first signals; and

controlling operations of a load based at least in part on the second signal comprises controlling an intensity of emitted light, a color of the emitted light, or both, of one or more light-emitting diodes (LEDs) based at least in part on the one or more second signals.

7. The method as recited in claim 1, wherein:

receiving a user-adjustable first signal from a dimmer comprises receiving a user-adjustable first signal from a triode-for-alternating-current (TRIAC) dimmer, the first signal having an AC parameter that is adjustable by a user input to the TRIAC dimmer;

converting the first signal to a second signal comprises converting the first signal to a plurality of second signals, each of the plurality of second signals having a respective DC parameter; and

controlling operations of a load based at least in part on the second signal comprises controlling an intensity of emitted light, a color of the emitted light, or both, of one or more light-emitting diodes (LEDs) based at least in part on the plurality of second signals.

8. An apparatus comprising:

a translator unit that, in response to receiving a first signal that is sinusoidal in nature with a user-adjustable duty cycle, generates a second signal, the second signal comprising a pulse-width modulated (PWM) signal, a parallel digital signal, a serial digital signal, a signal having a DC voltage variable between 0 volt and 10 volt, a voltage signal having varying DC voltage levels, a signal representative of an impedance value, or a combination thereof; and

a power supply unit, coupled to the translator unit, that generates a third signal that controls operations of a load in response to receiving the second signal and being coupled to the load, the third signal being variable according to a setting of the second signal.

9. The apparatus as recited in claim 8, wherein the translator unit comprises:

a signal processing unit that generates a fourth signal that is direct current (DC) in nature in response to receiving the first signal; and

a controller unit, coupled to the signal processing unit, which generates the second signal in response to receiving the fourth signal.

10. The apparatus as recited in claim 9, wherein the signal processing unit generates the fourth signal using a photocoupler, a transformer, a heat-sensing circuit, a motor speed-sensing circuit, a resistor-capacitor (RC) circuit, a circuit that senses an electrical or magnetic parameter of the first signal, or a combination thereof.

11. The apparatus as recited in claim 8, wherein the power supply unit comprises a controllable power supply unit, coupled to receive the second signal and a user-input control signal, which generates the third signal in response to receiving the second signal and the user-input control signal.

12. The apparatus as recited in claim 8, wherein the translator unit transmits the second signal wirelessly, and wherein the power supply unit receives the second signal wirelessly.

13. The apparatus as recited in claim 8, further comprising:

one or more dimmer units coupled to the translator unit, each of the one or more dimmer units generating a respective first signal according to a setting of a respective user input in response to receiving the respective user input; and

at least one light-emitting diode (LED) as the load coupled to receive the third signal from the power supply unit,

wherein the translator unit is coupled to receive the one or more first signals from the one or more dimmer units and generates the second signal according to a combination of the one or more first signals.

14. An apparatus comprising:

a dimmer unit that, in response to receiving a user input, generates a first signal, the first signal being sinusoidal in nature and having a duty cycle adjustable according to a setting the user input; and

a translator unit, coupled to the dimmer unit, that generates a second signal in response to receiving the first signal, the second signal comprising a pulse-width modulated (PWM) signal, a parallel digital signal, a serial digital signal, a signal having a DC voltage variable between 0 volt and 10 volt, a voltage signal having varying DC voltage levels, a signal representative of an impedance value, or a combination thereof.

15. The apparatus as recited in claim 14, wherein the translator unit is configured to receive a plurality of output signals from a plurality of dimmer units and generate the second signal according to a combination of the plurality of output signals, each of the output signals being sinusoidal in nature and having a respective user-adjustable duty cycle.

16. The apparatus as recited in claim 14, wherein the translator unit is configured to receive one or more output signals from one or more dimmer units and generate respective one or more second signals according to a combination of the one or more output signals, each of the one or more output signals being sinusoidal in nature and having a respective user-adjustable duty cycle.

17. The apparatus as recited in claim 14, wherein the translator unit comprises:

a signal processing unit that generates a third signal that is direct current (DC) in nature in response to receiving the first signal; and

a controller unit, coupled to the signal processing unit, which generates the second signal in response to receiving the third signal.

18. The apparatus as recited in claim 15, wherein the signal processing unit generates the fourth signal using a photocoupler, a transformer, a heat-sensing circuit, a motor speed-sensing circuit, a resistor-capacitor (RC) circuit, a circuit that senses an electrical or magnetic parameter of the first signal, or a combination thereof.

19. The apparatus as recited in claim 14, further comprising:

a power supply unit, coupled to the translator unit, that generates a fourth signal to power a load in response to receiving the second signal and being coupled to the load, a value of a parameter of the fourth signal being set according to the second signal.

20. The apparatus as recited in claim 19, further comprising:

one or more light-emitting diodes (LEDs) as the load coupled to be powered by the fourth signal of the power supply unit, the fourth signal controlling an intensity of light emitted by the one or more LEDs, a color of the light emitted by the one or more LEDs, or both.