oscillator

noun

1. Electronics. a circuit that produces an alternating output current of a certain frequency determined by the characteristics of the circuit components.
2. a device or machine producing oscillations.
3. a person or thing that oscillates.

noun

1. a circuit or instrument for producing an alternating current or voltage of a required frequency
2. any instrument for producing oscillations
3. a person or thing that oscillates

n.agent noun in Latin form from oscillate; 1835 of persons, 1889 in reference to electric currents.