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Amplitude-controlled harmonic oscillator - has detector with logarithmic characteristic to measure output signal amplitude
Amplitude-controlled harmonic oscillator - has detector with logarithmic characteristic to measure output signal amplitude
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机译:调幅谐波振荡器-具有对数特性的检测器以测量输出信号的幅度
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摘要
The amplitude-controlled oscillator has a linear amplifier and passive resonant circuit forming a closed loop. The amplitude is stabilised by a control circuit comprising an amplitude detector, a comparator, a controller and a device to set the loop gain. - The detector that measures the signals amplitude has a logarithmic transfer characteristics and consists of a linear amplitude converter coupled to a logarithmic transformation circuit. The transformation circuit comprises an amplifier with a common base transistor in its negative feedback loop.
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