General information ( 4 ) :

An oscillator is an electronic device used for the purpose of generating a signal. Oscillators are found for example in computers, wireless receivers and transmitters, and audio-frequency equipment, and music synthesizers. Every oscillator has at least one active device.This active device acts as an amplifier.There are many types of oscillator devices, but they all operate according to the same basic principle: an oscillator always employs a sensitive amplifier whose output is fed back to the input in phase. Thus, the signal regenerates and sustains itself. This is known as positive feedback.

• 555 timer IC information page - This is a very commonly used IC for making simple timing circuits and oscillators.   
• Oscillator Basics - Introduction to LC oscillators.   
• Oscillators - This web page is devoted to oscillators. This page has general information on very many oscillator types and link for more information.   
• Rules of thumb aid in time-constant analysis - information on calculating time constands on RC circuits   

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