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本文叙述应用回转器的振荡电路的原理与实践.将运算放大器及其外接元件组成回转器,就能够模拟一只Q值极高的大电感,从而实现超低频振荡.这种等放电感的电感量可达1MH,甚至更高!如果将模拟电感与适当的电容组成并联谐振回路,它的振荡频率很容易低于1Hz.在此回路两端接上正反馈回路,就能维持稳定振荡,而且波形良好.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.
This paper describes the principle and practice of the oscillator circuit using the gyrator. The operational amplifier and its external components form a gyrator, you can simulate a very high Q value of the large inductance, in order to achieve ultra-low frequency oscillation. The amount of up to 1MH, or even higher! If the analog inductor and the appropriate capacitance parallel resonant circuit composed of its oscillation frequency is very easy to less than 1Hz. In this loop connected to the positive feedback loop, can maintain a stable oscillation, and Waveform is good.Circuit output can be used as a standard signal to calibrate the medical differentiator for physiological pulse waveform transformation research.