Oscillator (Oscillator) is an electronic circuit that produces a vibration or periodic electrical signals with constant amplitude. Wave signal is generated there is a form Sine Waves (Sinusoide Wave), Wave Box (Square Wave) and Wave Dental Saw (Saw Tooth Wave). Basically signal of direct current or DC power supply (power supply) is converted by the oscillator circuit signal into alternating current or AC so as to produce an electrical signal that is periodic with a constant amplitude. Three terms are closely related to the oscillator circuit is "Periodic", "Amplitude" and "Frequency". The following is the third definition of the important terms. Periodic is the time required to take one vibrations or the time it takes the first wave cycle back and forth, usually denoted by t with units of seconds (second). Amplitude is the furthest deviation measured from the point of balance in a vibration. Frequency is the number of vibrations produced during 1 second, the unit of frequency is Hertz.
classification Oscilator The classification is usually done based oscillator output frequency characteristics that result. Here below are based on the classification oscillator output frequency . Low Frequency Oscillator (Low Frequency Oscillator ) , which is an oscillator that can generate low frequencies below 20Hz . Oscillator Audio ( Audio oscillator) , the oscillator that can generate audio frequencies between 16Hz to 20kHz . Radio Frequency Oscillator ( Radio oscillator) , the oscillator that can generate a radio frequency between 100kHz to 100GHz . The oscillator circuits are widely used in electronics devices such as radio transmitters , television transmitters , Clock , Beeper and console video games . Working Principle Oscillator A simple oscillator circuit consists of two main parts , namely amplifier ( Amplifier ) and Feedback ( Feedback ) . Here's Block Diagram base an oscillator circuit .
Basically, the oscillator uses small signal or a small sigh emanating from the amplifier itself. At the time of amplifier or Amplifier given electric current , a little noise will occur , little noise is then diumpanbalik to the amplifier resulting in signal amplification , if the output (output ) amplifier diumpanbalik in phase with the signal ( input ) , then the oscillations will occur .
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