An oscillator is used to generate a repetitive and periodic waveform of desired shape, frequency, and amplitude and you will find one in practically every electronic apparatus. It is either used to drive a load or to drive other circuits. Listed below are characteristic shapes of some oscillators.
Some signals are combined or mixed together to alter the shape and characteristics output to achieved a particular purpose.
Different types of oscillators find useful application in the following areas but not limited to these:
- Signal broadcast by radio and television transmitters
- Electronic test equipment for example signal generator and hearing aids
- Radio broadcasting/transmitting and receiving for example RFID
- Clock and timing signals that regulates control, computers and clocks
- Music and sound produced by electronic organ, synthesizer, and beepers
- Converts direct current (DC) supply to alternating current (AC) signals
- Heat generation in induction and dielectric heating f.e microwave oven
- Imaging for example ultrasound
- Cleaning as in ultrasonic cleaner
The use of oscillators are too numerous to mention. Can you think of any other use?