| 调脉宽式功率超声设备的研究 |
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| 引用本文： | 任金莲,牛勇,张明铎,李争光.调脉宽式功率超声设备的研究[J].陕西师范大学学报,1998(3). |
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| 作者姓名： | 任金莲 牛勇 张明铎 李争光 |
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| 作者单位： | 陕西师范大学应用声学研究所 |
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| 摘 要： | １Ｄ类功放共同导通的原因在大功率超声设备中，多数超声设备都采用Ｄ类功率放大器，如图１所示．该放大器的主要特点是高压功放管工作于开关状态，耗散功率小，实际效率高．在该放大器中，ＢＧ１和ＢＧ４为一组，而ＢＧ３和ＢＧ２则为另一组．在正常情况下，两组分别以相...
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Power ultrasonic instrument of adjusting pulse duration model |
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| Ren Jinlian,Niu Yong,Zhang Mingduo,Li Zengguang.Power ultrasonic instrument of adjusting pulse duration model[J].Journal of Shaanxi Normal University: Nat Sci Ed,1998(3). |
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| Authors: | Ren Jinlian Niu Yong Zhang Mingduo Li Zengguang |
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| Abstract: | A method of removing joint conducting phenomenon in power ultrasonic instrument of type D by using the technique of adjusting pulse duration is introduced, in order to improve the stability of ultrasonic indtrument. The reason of joint conduction and the principle and method of adjusting pulse duration technology are analyzed specifically. |
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| Keywords: | power ultrasonic adjusting pulse duration instrument |
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