在放大电路中采用负反馈，而在波形产生和波形变换的电路中则需要采用正反馈。
Negative feedback has been widely used in amplify circuit, but in wave-generating and wave-transforming circuit, it should adopt positive feedback.
电路输出可以作为标准信号，用来校准医用微分器，作生理电脉冲波形变换的研究。
The output of the oscillator can be used as a standard signal for calibration of the differentiator to employ in research on the transformation of physiological pulse wave forms in medical science.
为新一代正弦交流稳压器、电子变压器、交流调压器、同频波形变换器的实现奠定了关键技术基础。
This kind of converter lay the key technical foundation on new type regulated sinusoidal ac power supply, electronic transformer , ac regulator, and wave converter etc.
本发明所设计的波形变换方法及其装置，省去了中间直流环节，使线路得以大大简化，显著降低了成本，同时使电压、电流谐波得以减小，并可获得较高的功率因数。
The present invention has no intermediate DC link and thus simplified circuit, low cost, less harmonic component in the voltage anc current waveform and high power factor.
本发明所设计的波形变换方法及其装置，省去了中间直流环节，使线路得以大大简化，显著降低了成本，同时使电压、电流谐波得以减小，并可获得较高的功率因数。
The present invention has no intermediate DC link and thus simplified circuit, low cost, less harmonic component in the voltage anc current waveform and high power factor.
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