Abstract: An LED traffic light driven by a control circuit, where the control circuit includes a driving power supply outputting direct current, and an accurate constant current module configured to perform accurately constant current processing for the direct current output by the driving power supply. The LED traffic light includes a plurality of conductive branches connected in parallel at an output end of the accurate constant current module, and each of the conductive branches is formed by connecting a power line with at least one light emitting diode. It is not necessary for the LED traffic light to connect a resistor in series or in parallel, and the light emitting diode can be driven directly by a direct current at a low voltage without the need for a built-in high-voltage AC/DC driving power supply.

Abstract: An intelligent control circuit for a traffic LED signal lamp, including: a driving power, configured to convert an utility electric alternating current into multiple direct currents for output; multiple precise constant current modules, in one-to-one correspondence to the multiple direct currents, respectively, and configured to perform precise constant current processing on each of the multiple direct currents for output; and traffic LED signal lamps, in respective connection with output terminals of multiple precise constant current modules.

Abstract: An LED traffic light driven by a control circuit, where the control circuit includes a driving power supply outputting direct current, and an accurate constant current module configured to perform accurately constant current processing for the direct current output by the driving power supply. The LED traffic light includes a plurality of conductive branches connected in parallel at an output end of the accurate constant current module, and each of the conductive branches is formed by connecting a power line with at least one light emitting diode. It is not necessary for the LED traffic light to connect a resistor in series or in parallel, and the light emitting diode can be driven directly by a direct current at a low voltage without the need for a built-in high-voltage AC/DC driving power supply.

Abstract: An intelligent control circuit for a traffic LED signal lamp, including: a driving power, configured to convert an utility electric alternating current into multiple direct currents for output; multiple precise constant current modules, in one-to-one correspondence to the multiple direct currents, respectively, and configured to perform precise constant current processing on each of the multiple direct currents for output; and traffic LED signal lamps, in respective connection with output terminals of multiple precise constant current modules.