Overvoltage protection circuit based switching power supply for dryer used for spray-painted leather

Abstract

The invention discloses an overvoltage protection circuit based switching power supply for a dryer used for spray-painted leather. The overvoltage protection circuit based switching power supply is characterized by mainly comprising a control chip U1, a transformer T, an overvoltage protection circuit, a current adjustment circuit, a field effect transistor MOS1, a polar capacitor C5, a diode D3, a polar capacitor C4, the active band-pass filter circuit, a current peak constant circuit, and a photoelectric coupling switching circuit which is connected with the current adjustment circuit and the secondary side inductive coil L3 of the transformer T separately. By adoption of the overvoltage protection circuit based switching power supply, the high voltage pulse in the voltage and the high current ripple in the current can be effectively adjusted to enable the dynamic states of the voltage and the current to be kept stable so as to ensure that the overvoltage protection circuit based switching power supply can output stable voltage and current; and in addition, the stability of the drying temperature of the dyer used for the polymer spray-painted leather is ensured, and deformation or falling off of paint on the surface of the polymer shoe material leather is effectively prevented.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a switching power supply for a leather spray paint dryer based on an overvoltage protection circuit. Background technique [0002] As polymer leather is widely used in the leather products industry, while people have higher and higher requirements for the quality of leather products, they also put forward higher requirements for the quality of polymer leather. However, to produce high-quality polymer leather, the key lies in the step of drying the polymer shoe material leather after painting. [0003] At present, the switching power supply of the polymer leather spray dryer has the problem of unstable output voltage and current, which leads to the extremely unstable drying temperature of the polymer leather spray dryer, resulting in deformation or paint peeling on the surface of the polymer shoe material leather. defect. [0004] Therefore, it is a top priority to provide a switching...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of unstable output voltage and current in the switch power supply of the polymer leather spray paint dryer in the prior art, and provide a switching power supply of the polymer leather spray paint dryer

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