oscillator

/'ɔsileitə/

Thân thiện

An electronic oscillator generates a stable signal for a radio transmitter.

Definition

1. Noun:
   • A device or system that generates a repeating or oscillating signal: An oscillator is a technical device or circuit that produces a continuous, periodic, often electronic or sonic, waveform. It generates oscillations, which are regular variations in magnitude or position around a central point.

Usage Examples

• Noun:
  • The quartz crystal in a watch acts as a highly precise oscillator to keep accurate time.
  • A local oscillator in a radio receiver is used to tune into different frequencies.
  • The scientist adjusted the electronic oscillator to produce a stable sine wave.

Advanced Usage

• "Voltage-controlled oscillator (VCO)": An oscillator whose output frequency is controlled by an input voltage.
  • The VCO is a key component in frequency synthesizers and phase-locked loops.
• "Harmonic oscillator": A theoretical or physical system that, when displaced from its equilibrium position, experiences a restoring force proportional to the displacement.
  • The simple pendulum is a classic example of a harmonic oscillator in physics.

Variants and Related Words

• Oscillate (verb): To move or swing back and forth in a regular rhythm.
  • The fan oscillates to distribute air around the room.
• Oscillation (noun): The act or process of oscillating; a single cycle of such movement.
  • The damping reduced the amplitude of the pendulum's oscillation.
• Oscillatory (adjective): Characterized by or involving oscillation.
  • The system exhibited complex oscillatory behavior.

Synonyms

• Wave generator: A device that produces waveforms.
• Vibrator: A device that causes something to vibrate, though this often implies mechanical vibration rather than electronic signal generation.

Related Phrases and Technical Terms

• Crystal oscillator: An oscillator that uses the mechanical resonance of a vibrating crystal to create a precise electrical signal.
  • Most modern computers use a crystal oscillator for their clock signal.
• Relaxation oscillator: An oscillator that generates a non-sinusoidal waveform (like a sawtooth or square wave) by the repetitive charging and discharging of a capacitor.
  • A blinking LED circuit can be built using a simple relaxation oscillator.

Học thuật

Noun

1. generator that produces sonic oscillations or alternating current