Abstract: The present invention provides a method for realizing a multiple dimming control mode of an LED power supply, which enables users to switch the dimming control method of the power supply to a DC voltage dimming, a PWM dimming, a PWM combined with PWM frequency conversion dimming, etc. according to a load of the lamp condition. The LED dimming power supply using this method combines the advantages of the above dimming control methods, significantly improves the compatibility with existing various types of lamps, and enables users to select a more appropriate dimming control method according to the load of the lamp of a practical application and its dimming characteristic, so as to achieve the optimal usage status and dimming effect of the lamp.

Abstract: The present invention provides a multifunctional LED dimming power supply with dimming, color adjustment and voltage adjustment functions. The power supply driver is connected to a first power MOS tube, a second power MOS tube, a voltage regulation circuit, and a dimming and color control module; the dimming and color control module is connected to a voltage regulation circuit, an external dimmer signal collection input circuit, a potentiometer, a mode switching four-shift switch, a first power MOS tube and a second power MOS tube; the first MOS drive circuit is connected to the second power MOS tube; the second MOS drive circuit is connected to the first power MOS tube. The multifunctional dimming power supply provides the PWM dimming, color temperature adjustment and DC dimming functions to satisfy most LED lamps on the market and facilitate users to choose the products while providing a very high price-performance ratio.

Abstract: The present invention discloses a method of selecting a PWM dimming frequency for a dimmable LED power supply. After a main power drive is powered on, a main control module checks a shift element signal status of a four-shift switching module. Based on the main control module, a dimming PWM pulse frequency currently outputted by the power supply is determined according to the shift element signal status, a sample signal of a dimming signal processing circuit is collected to obtain a sample signal, a PWM drive signal is determined according to the dimming PWM pulse frequency and sample signal, and a switch status of a power MOS tube is controlled according to the PWM drive signal to adjust a lamp brightness. The invention allows user to freely select or set the dimming PWM pulse frequency of the dimmable power supply according to the environmental conditions of the use.

Abstract: Provided is an LED power supply integrated junction box, which includes a main body and a bottom cover. One side of an inner wall of the main body is connected with multiple positioning hollow columns. A partition is fixedly connected to the middle of the main body. Two small circular through holes are defined in one side of the partition. The opposite surfaces of the partition and the inner wall of the main body are each fixedly connected with multiple clamping grooves.

Abstract: Provided is an LED power supply integrated junction box, which includes a main body and a bottom cover. One side of an inner wall of the main body is connected with multiple positioning hollow columns. A partition is fixedly connected to the middle of the main body. Two small circular through holes are defined in one side of the partition. The opposite surfaces of the partition and the inner wall of the main body are each fixedly connected with multiple clamping grooves.

Abstract: A method of controlling light adjustment include activating a power supply; activating a digital control circuit to carry out an adjustment output voltage control mode, sense a signal from a light adjustment control switching circuit, and determine a light adjustment control mode; in response to an LED power source operating in the adjustment output voltage control mode, adjusting luminance from 100% to N % and continuously adjusting luminance from N % to ?0.01% wherein a 100% PWM signal output from a PWM driving signal circuit is unchanged, and a light adjustment signal collection circuit transmits a collected light adjustment signal having luminance between N % and ?0.01% to the digital control circuit; in response to the LED power source operating in a PWM adjustment control mode, adjusting luminance from 100% to N % and continuously adjusting luminance from N % to ?0.01%; and obtaining a light adjustment curve.

Abstract: A method of controlling light adjustment include activating a power supply; activating a digital control circuit to carry out an adjustment output voltage control mode, sense a signal from a light adjustment control switching circuit, and determine a light adjustment control mode; in response to an LED power source operating in the adjustment output voltage control mode, adjusting luminance from 100% to N % and continuously adjusting luminance from N % to ?0.01% wherein a 100% PWM signal output from a PWM driving signal circuit is unchanged, and a light adjustment signal collection circuit transmits a collected light adjustment signal having luminance between N % and ?0.01% to the digital control circuit; in response to the LED power source operating in a PWM adjustment control mode, adjusting luminance from 100% to N % and continuously adjusting luminance from N % to ?0.01%; and obtaining a light adjustment curve.