CONTROL CIRCUIT WITH ADJUSTABLE LED COLOR TEMPERATURE

The present invention discloses a control circuit with adjustable LED color temperature, characterized in that the control circuit with adjustable LED color temperature comprises a rectifier circuit, a filter circuit, a voltage division circuit, an optical coupling circuit, a constant current control circuit, a power supply circuit for supplying power for the constant current control circuit, an output filter circuit, a voltage stabilizing diode, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a ninth capacitor and a triode; an output end of the rectifier circuit is connected with an input end of the filter circuit; an output end of the filter circuit is divided into two paths; one path is connected with an input end of the voltage division circuit, and the other path is connected with an input end of the constant current control circuit. The circuit of the present invention is simple and easy to realize. An LED lamp is composed of a plurality of first LED lamp beads that generate bright white light and a plurality of second LED lamp beads that generate warm color light. The color temperature of the lamp is changed to provide a warm and soft light environment and ensure that the brightness of the lamp is unchanged.