Since the mid-1970s, transformerless switching power supply technology has become popular in Europe, the United States, Japan and other countries around the world. In particular, the rapid development
The following are the courses on EMI filter & EMI optimization selected by the editor, covering the basic knowledge and principles of EMI, methods and techniques for reducing EMI in different circuit
Abstract: This paper introduces a caller ID display that uses the AT89C52 single-chip microcomputer to receive and display the caller ID of a phone. The display receives the caller ID information tran