標題: 電話振鈴之改革
An Innovative Ringing Technique in Telephone System—The Electronic Tone Ringer
作者: 張天鵬
Tian-Pong Chang
公開日期: 十二月-1976
摘要: A new electronic tone ringer is presented. Basically the circuit of the new ringer can be drived by a 3.5 KHz ringing source, 3 volts in amplitude. The new ringer has the advantages over the convenntional magneto bell ringer in the following respects. System reliability, flatness of frequency response, weight and cost. A prototype was built and tested with satisfactory results.
URI: http://hdl.handle.net/11536/137583
期刊: 交通大學學報
The Journal of National Chiao Tung University
Volume: 2
起始頁: 252
結束頁: =O56-1
顯示於類別:交通大學學報


文件中的檔案:

  1. HT001308-26.pdf