Improvement for the Design of Electronic Transformer
根据常用电子变压器的电磁兼容性和安全方面的新要求,对其基本线路进行改进设计和分析。在输入端加入了滤波网络和输入保护电路,并加入了实用的输出保护电路。既实现了220V输入、12V/60W输出的功能,又大大提高了电子变压器的性能,达到了IEC制定的技术标准。通过理论和实验分析,证明了该设计的优点,给出了元件参考参数。According to new requests of common electronic tr ansformers’ electromagnetic compatibility and security, the paper improves and analyzes the design of its basic circuit. A filtering net and a protective circu it of input are added in the front of input net, and a practical protective circ uit of output is also added. Then it realizes to transfer 220 V input into 12 V/ 60 W output, at the same time the design improves the performance of device and reach the setting criterion of IEC. The advantages of new design are proved with analysis of theory and experimentation, and the tried parameters are provided in the article.