Abstract: A wireless-control-based LED (Light-Emitting Diode) driver circuit is disclosed. A wireless module comprises a controller connected to an IR (infrared) wireless receiver, and further connected to one or more LED switch circuits. The controller sends PWM (Pulse Width Modulation) signals to the LED switch circuits to drive LEDs. Each LED switch circuit is connected to a power supply VCC, wherein an LED connected in parallel with a capacity is mounted between the LED switch circuit and the power supply VCC. The parallel-connected capacitor filters fluctuations of PWM signals and improves wireless sensitivity.

Abstract: The present disclosure is for a light-emitting diode light string control system, which comprises: a switching unit having a power input end, a power output end connected to the light string, and a controlled end. A control unit is connected to the controlled end of the switching unit. A second power-generating unit is also connected to the light-emitting diode light string. The light-emitting control command sent by the control unit is in a carrier wave mode to realize brightness variation of the light string, which saves costs and simplifies the control circuit. A short-circuit protection unit is employed to provide fast and reliable response in real time.

Abstract: The present disclosure is for a light-emitting diode light string control system, which comprises: a switching unit having a power input end, a power output end connected to the light string, and a controlled end. A control unit is connected to the controlled end of the switching unit. A second power-generating unit is also connected to the light-emitting diode light string. The light-emitting control command sent by the control unit is in a carrier wave mode to realize brightness variation of the light string, which saves costs and simplifies the control circuit. A short-circuit protection unit is employed to provide fast and reliable response in real time.

Abstract: The present disclosure relates to a drive control system for a light-emitting diode string, comprising a control unit and a signal-generating unit. The signal-generating unit comprises a switching element with a first terminal, a second terminal and a control terminal. One end of the control unit is connected to the control terminal, and the second terminal is connected to a negative terminal of the light-emitting diode string. A voltage stabilizing circuit is connected to the negative terminal of the light-emitting diode string, wherein a positive terminal of the light-emitting diode string is connected to a power supply unit. When the control unit turns on the switching element, the power supply unit directly drives the light-emitting diode string to emit light. When the control unit turns off the switching element, the power supply unit drives the light-emitting diode string to emit light through the voltage stabilizing circuit.

Abstract: The present disclosure relates to a drive control system for a light-emitting diode string, comprising a control unit and a signal generating unit, the signal generating unit comprising: a switching element comprising a first terminal, a second terminal and a control terminal, one end of the control unit being electrically connected to the control terminal, and the second terminal being electrically connected to a negative terminal of the light-emitting diode string; and a voltage stabilizing element electrically connected to the negative terminal of the light-emitting diode string, wherein a positive terminal of the light-emitting diode string is electrically connected to a power supply unit; the control unit is configured to control the switching element to be turned on, and the power supply unit is configured to directly drive the light-emitting diode string to emit light; and the control unit is further configured to control the switching element to be turned off, and the power supply unit is configured t

Abstract: The present disclosure is for a LED submersible light comprising a light-emitting lampshade in thread connection with a back cover to form a closed chamber housing a circuit board, lamp beads, batteries, and a control switch. A silica gel sealing ring is disposed in a positioning groove along an inner surface of the back cover. When engaged the sealing ring expands laterally in both directions to fill up spaces between internal and external threads and the positioning groove.