10 Facts About Audio oscillators


Common examples of signals generated by Audio oscillators include signals broadcast by radio and television transmitters, clock signals that regulate computers and quartz clocks, and the sounds produced by electronic beepers and video games.

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Negative-resistance Audio oscillators are usually used at high frequencies in the microwave range and above, since at these frequencies feedback Audio oscillators perform poorly due to excessive phase shift in the feedback path.

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Square-wave relaxation Audio oscillators are used to provide the clock signal for sequential logic circuits such as timers and counters, although crystal Audio oscillators are often preferred for their greater stability.

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Triangle-wave or sawtooth Audio oscillators are used in the timebase circuits that generate the horizontal deflection signals for cathode ray tubes in analogue oscilloscopes and television sets.

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In general, relaxation Audio oscillators are used at lower frequencies and have poorer frequency stability than linear Audio oscillators.

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LC circuit

These voltage controlled Audio oscillators are widely used in phase-locked loops, in which the oscillator's frequency can be locked to the frequency of another oscillator.

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Voltage controlled relaxation Audio oscillators can be constructed by charging and discharging the energy storage capacitor with a voltage controlled current source.

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Audio oscillators attached an LC circuit to the electrodes of an arc lamp, and the negative resistance of the arc excited oscillation in the tuned circuit.

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Audio oscillators showed that the stability of the oscillations in actual oscillators was due to the nonlinearity of the amplifying device.

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Audio oscillators originated the term "relaxation oscillation" and was first to distinguish between linear and relaxation oscillators.

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