| 研讨传声器管的特定参数IDS |
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| 引用本文： | 张超越. 研讨传声器管的特定参数IDS[J]. 电声技术, 2012, 36(8): 22-25,38 |
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| 作者姓名： | 张超越 |
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| 作者单位： | 中石化中原油田分公司信息中心,河南 濮阳,457001 |
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| 摘 要： | 介绍了传声器结构原理与普通JFET的区别,说明了外加电阻器R或"两孔"的基本原理和作用,研究分析了传声器的工作电流IDS和饱和漏电流IDSS的特性以及两者之差形成的原因,并进行了大量实验。最后指出,加电阻器结构逐渐减少甚至取消,而外加"两孔"已被大量采用,更适应大批量生产需要。而IDS变化,进而又改变其他电参数,是生产传声器管中的重要问题。
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| 关 键 词： | 传声器管 驻极体 P+N结 栅极电位 |
Discussion on the Specific Parameter IDS of Microphone Tube |
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| ZHANG Chaoyue. Discussion on the Specific Parameter IDS of Microphone Tube[J]. Audio Engineering, 2012, 36(8): 22-25,38 |
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| Authors: | ZHANG Chaoyue |
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| Affiliation: | ZHANG Chaoyue (Information Center of Sinopec Zhongyuan Petroleum Co., Ltd., Puyang Henan 457001, China) |
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| Abstract: | The difference between microphone structure principle and JFET is introduced, and the basic principle and role of external resistor R or＂ two hole＂ are indicated. The characteristics of operating current IDS and saturated drain current IDSS of microphone and the reason of the two differences are researched and analyzed, and a large number of experiments are carried on. Finally, it is pointed that the structure of adding the resistor is gradually reduced or even canceled, and plus ＂two hole＂ is widely adopted, which is adapted to high - volume production needs. The IDS changes, and changes the other electrical parameters, which is the important issue of microphone tube production. |
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| Keywords: | microphone tube electret P ＋ N junction grid potential voltage |
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