说明笔者曾从事多年传真线路联接设备(无源网络)的设计与制作。主要负责部分滤波器和记录高压电路的改进设计。经过多次试验,成功地改进了高压记录电路,使该电路在二类机获得采用。现将记录高压电路的改进设计方案介绍如下。传真电报通信是利用扫描技术和光电变换的原理,把图象(如表、文字、相片)从一方传递到另一方的一种通信方式。其原理是将原样(图象)放在传真发送机的滚筒上,依照一定的次序分成许多黑、白深浅不同的小点,通过光电设备(如光电倍增管)的作用,把深、 Description I have been engaged in many years fax line connection equipment (passive network) design and production. Mainly responsible for part of the filter and record high-voltage circuit design. After several trials, successfully improved high-voltage recording circuit, so that the circuit was adopted in the second class. Now record the improved design of high voltage circuit design are as follows. Facsimile Telegraph communications are a means of communication that uses images, such as tables, texts and photographs, to pass from one party to another using scanning and photoelectric conversion techniques. The principle is the original (image) on the fax transmitter roller, in accordance with a certain order into many black and white shades of different dots, through the role of optoelectronic devices (such as photomultiplier tube), the deep,