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voltage amplifier 電壓放大器。

voltage divider

To solve the problems above , this dissertation supported by the project of national natural science foundation ( nnsf ) : research on piezoceramic micro - actuator ’ s polarity modeling and controlling method ( code : 60274053 ) focuses on the research of driving and control technique of piezoceramic . the drivers based on voltage , current control had been designed with the high voltage amplifier as core component 針對壓電陶瓷驅動存在的上述問題,本文結合國家自然基金項目“壓電陶瓷微驅動器件極化模型與驅動方法的研究” (編號: 60274053 ) ,以高壓運算放大器為核心元件,通過分析電壓、電流型驅動器原理及電路參數,提出了一種彌補其不足的復合型驅動方法。

After analyzing the sense principles and calculation expression for piezoelectricity , we compose a sense network , compare the difference between the voltage amplifier and charge amplifier , give out the electric circuit of piezoelectric sensor for measure system 在分析了壓電片對動態應變的傳感原理和計算表達式后,該系統采用壓電傳感器組建了一個傳感器網絡。并且對比了電壓放大器和電荷放大器的差異。

We have designed the scanning and control system , which includes a pre - amplifier , a pid feedback and scanning - control circuit , high - voltage amplifiers and so on . the function of controlling scan and feedback has been realized 設計完成包含有前置放大電路、 pid反饋和掃描控制電路、高壓放大電路等掃描控制電路在內的掃描控制系統,完成各部分電路性能的測試及功能調試,實現反饋和掃描控制。

The fault that the series resistor has high value can be avoided by using the constant current amplifier , and the fault that the dividing resistor reduces the working voltage of the speaker can be avoided by using the constant voltage amplifier 使用恒流功放,可以避免傳統方法中串聯電阻取值過大的缺點;使用恒壓功放,可以消除分壓電阻降低揚聲器工作電壓的不足。

This measurement amplifier with relay outputs works as a uniform voltage amplifier for strain gauge measuring bridges 這款測量放大器帶有繼電輸出,它像恒定電壓放大器那樣工作,用于應變測量電橋。

The design of voltage amplifier for dc ac standard supply 交直流標準源電壓放大器的研制