Voltage Controlled Oscillator Circuit. Using a 1 v input the oscillator s output frequency is around 1500 hz. Voltage controlled oscillator is a type of oscillator where the frequency of the output oscillations can be varied by varying the amplitude of an input voltage signal.
Lm3403 3303 Voltage Controlled Oscillator Circuit Voltage Controlled Oscillator Circuit Circuit Diagram from no.pinterest.com
Voltage controlled oscillators are commonly used in frequency fm pulse pm modulators and phase locked loops pll. Frequency tx or rx range voltage tuning range linear tuning nonlinear tuning fig. Within a phase locked loop pll or frequency synthesizer the performance of the voltage controlled oscillator vco is key.
A voltage controlled oscillator vco is an oscillator whose frequency can be varied by a voltage or current.
Using a 1 v input the oscillator s output frequency is around 1500 hz. If you supply a 5 v input the oscillator s output frequency dips to about 300 hz. The circuit as shown in figure below presents a 555 as an extremely simple voltage controlled oscillator vco. Another application of the voltage controlled oscillator is the variable frequency signal generator itself.
