Variable Frequency Oscillator

Variable Frequency Oscillator (VFO ) ( engl: oscillator with variable frequency ) is the generic term for all tunable oscillator circuits or frequency generators. Generally, either of the capacitor or the inductance of a resonant circuit is changed. VFO generators are mainly used in radio technology.

VFO's are usually a voltage-controlled oscillator ( engl: Voltage Controlled Oscillator (VCO ) ): implemented or as a digitally controlled oscillator (Digitally Controlled Oscillator (DCO ) engl).

  • Electrical oscillator
Function generator Numerically controlled oscillator
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