Analysis and Design of Switching Power Supply Protection Circuit for Numerical Control

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

LC03-3.3 SOP8 TVS Static Protection 3.3V

Summary:
The CNC machine system of precision machine tools consists of CNC controller, built-in PLC controller, switching power supply circuit, CRT display, input and output interface, photoelectric encoder and other equipment. The switching power supply circuit is responsible for supplying power to all parts of the CNC machine system. In the machine tool processing workshop and other places, because there are more high-power electrical equipment, in this complex electromagnetic environment, if the reliability of the switching power supply is not high and the protection function is lacking, the CNC machine tool system will work abnormally, and it is easy to have a major speed such as flying. ACCIDENT. Therefore, the high-reliability switching power supply with various protection functions is an important guarantee for the stable operation of the CNC machine tool system. This paper mainly introduces the working principle and implementation method of various protection circuits for switching power supply for machine tool numerical control system. Through actual development, the stability of the switching power supply of the system is greatly improved, the protection function is stable and reliable, and the mass production requirements are met.
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