Power supply processing device and discharging control method thereof

Abstract

The invention discloses a power supply processing device, which comprises an input port, an output port, a power supply converting module and a discharging module, wherein the input port is used for connecting with a power supply; the output port is used for connecting with at least one light-emitting diode; the power supply converting module is connected with the input port and the output port, and is provided with an equivalent capacitor which is connected in parallel with the light-emitting diode; the power supply converting module is used for receiving the power supply and converting into electric energy of a preset voltage or current form, and outputting to the light-emitting diode through the output port; the discharging module is connected with the power supply converting module, and is provided with a resistor; when the power supply is used for supplying power to the power supply converting module, the discharging module is used for controlling the resistor of the discharging module to be disconnected from the equivalent capacitor; and when the power supply stops supplying power to the power supply converting module, the discharging module is used for controlling the resistor of the discharging module to be connected in parallel with the equivalent capacitor.

Description

technical field [0001] The present invention is related to power supply, more specifically, a power processing device applicable to light-emitting diodes and a discharge control method thereof. Background technique [0002] With the advancement of optical technology, the technology and application of light-emitting diodes (LEDs) are becoming more and more mature, and light-emitting diodes are small in size, fast in response, long in life, not easy to attenuate, strong in appearance, resistant to vibration, and can emit light in full color (Including invisible light), low loss, small heat radiation, easy mass production, etc. Therefore, more and more light sources of lamps are replaced by light-emitting diodes (LEDs) instead of traditional lamps or bulbs. [0003] see figure 1 , is a circuit structure diagram of a power processing device 70 used in common light-emitting diodes, the power processing device 70 includes an input port 71, an output port 72 and a power conversion...

AI Technical Summary

Problems solved by technology

[0004] However, although the above design can achieve the purpose of lighting, please refer to figure 2 , the design of its circuit will make the user after the power switch SW is closed (OFF), the light emitting diode 80 will still continue to receive and consume the residual electric energy stored in the effective capacitor 731, causing the light emitting diode 80 to be in the power switch SW After it is turned off, it will continue to light up for a period of time before going out gradually or one by one, which will cause users to have the impression of poor design or inferior products when using it

Therefore, based on the above, it can be known that the design of the existing power processing device 70 is still not perfect, and there is room for improvement

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