PSM发射机功率开关模块对杂音指标影响探析

Effect of Power Switch Module of PSM Transmitter on the Noise Index

随着脉阶调制技术在PSM发射机的广泛应用,改变了大功率电子管在广播发射机主整地位,使发射机把主整和调幅器合而为一,主整电压化整为零,集成化、模块化;这项技术的应用减小高额整流管费用,极大提高了发射机各级电压稳定性、可靠性和安全性。本文简要介绍了PSM发射机功率开关模块原理,针对发射机运行中一旦某模块出现异常产生的杂音,影响播出质量和效果展开了分析讨论,同时就故障的排查解决进行了论述。

With the pulse step modulation technology being widely used in the PSM transmitter, it reduced the high cost of rectifier, and greatly improved the voltage stability, reliability and security. This paper briefly introduced the principle of the power switch module of PSM transmitter, and the abnormal noise in the operation, which may influence the quality and effect. At the same time, solutions to the problems were also discussed.