压控振荡器 Voltage-controlled oscillator
（重定向自Voltage controlled oscillator）
压控振荡器 (voltage-controlled oscillator, VCO) 是一种以电压输入来用来控制振荡频率的电子振荡电路设计。其振荡的频率或重复的比例会随着直流电压的不同而改变，这个特性可以用来将调制信号当做压控振荡器的输入而产生不同的调制信号，像是FM调制、PM调制、PWM调制。
Voltage controlled oscillator
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Voltage-controlled oscillator 压控振荡器
（重定向自Voltage controlled oscillator）
A voltage-controlled oscillator or VCO is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency. Consequently, modulating signals applied to control input may cause frequency modulation (FM) or phase modulation (PM). A VCO may also be part of a phase-locked loop.
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