Patent ID: 11930578
Assignee: SEMISILICON TECHNOLOGY CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A power line carrying signal pixel control light emitting diode system applied to an alternating-current power, the power line carrying signal pixel control light emitting diode system comprising:
a micro-control circuit;
an alternating-current power detector electrically connected to the micro-control circuit; and
a plurality of light emitting diode lamps electrically connected to the micro-control circuit and the alternating-current power detector, and receiving the alternating-current power as a working power,
wherein the micro-control circuit comprises:
a first switch electrically connected to the light emitting diode lamps; and
a micro-control module electrically connected to the alternating-current power detector and the first switch,
wherein when the light emitting diode lamps are required to be controlled to light, the micro-control module detects a voltage status of the alternating-current power through the alternating-current power detector; the micro-control module continuously switches a conduction status of the first switch within a half-wave cycle along a voltage change of the alternating-current power to change a voltage transmitted to the light emitting diode lamps to generate a plurality of lighting control signals; the light emitting diode lamps are configured to receive the lighting control signals and light based on the lighting control signals,
wherein each of the light emitting diode lamps comprises:
a voltage positive point electrically connected to the alternating-current power detector;
a voltage negative point electrically connected to the micro-control circuit;
a light emitting diode driver electrically connected to the voltage negative point;
a first zener diode electrically connected to the voltage negative point and the light emitting diode driver;
a third capacitor electrically connected to the voltage negative point, the light emitting diode driver and the first zener diode;
a lamp side resistor electrically connected to the light emitting diode driver, the first zener diode and the third capacitor;
a first diode electrically connected to the light emitting diode driver, the first zener diode, the third capacitor and the lamp side resistor;
a fourth capacitor electrically connected to the voltage positive point;
a second zener diode electrically connected to the voltage negative point, the light emitting diode driver, the first zener diode, the third capacitor and the fourth capacitor; and
a second diode electrically connected to the light emitting diode driver, the lamp side resistor, the first diode, the fourth capacitor and the second zener diode,
wherein the first zener diode, the third capacitor, the lamp side resistor, the first diode, the fourth capacitor, the second zener diode and the second diode process the lighting control signals to obtain a second square wave signal; the second square wave signal is between a first breakdown voltage of the first zener diode and a second breakdown voltage of the second zener diode.