本文介绍的驻极体送话器是一种可用于自动、共电电话系统的新型送话器。这种送话器具有保真度高、噪声小、结构简单、寿命长、对振动不敏感等特点,并且耗电少可增加线路容量、节省电缆。文中简述了设计驻极体送话器时、为适应话机要求,在通用互换性、频率响应和稳定性等方面的特点,可供有关人员参考。 The electret microphone described in this article is a new type of microphone that can be used with an automatic, co-phone system. This microphone with fidelity, low noise, simple structure, long life, insensitive to vibration and other characteristics, and less power consumption can increase the line capacity, save the cable. The article briefly describes the design of the electret microphone, in order to meet the requirements of the phone, universal interchangeability, frequency response and stability aspects of the characteristics available to the relevant personnel for reference.