program switching

This paper introduces a kind of DC-DC PWM switching mode power supply driven by VMOS and applied to Program Exchange. The principle and circuit are presented.

介绍了一种用于程控交换机的由VMOS管驱动的DC-DC PWM开关电源的工作原理与电路设计。

In television, the control panel in a studio control room for the switching and mixing of video or audio program elements.

电视播放控制室内的一种控制面板，用来切换和混合视频或声频节目。同wireboard。

Program-controlled telephone switching board is the warships 'core equipment of the intercommunication systens, whose reliability and stability have a strong impact on the quality of the warships' inner command communication.

程控交换机是舰船内部通信系统的核心设备，其可靠性和稳定性直接影响着舰船的内部指挥通信的质量。

This paper aimes at the problems in the course of Program Control Digital Switching technology, which is a backboned specialized basic course of the speciality of communication engineering in our university.

针对我院通信工程专业的主干专业基础课程程控数字交换技术教学中存在的问题，对这门讲授实际技术的课程的基本结构进行探索。

Program Switching Mode Power Supply Applying to the Interface of Communication Conversion

通信转换接口的程控开关电源

Necessity, direction and key-point of construction of switching over production program were discussed in the paper. PROJECT

本文论述了转产项目建设的必要性及转产项目建设的方向与重点