Signal generators, also known as signal sources or oscillators, have a wide range of applications in production practice and technology. Various waveform curves can be represented by trigonometric equations. A circuit capable of generating a variety of waveforms such as a triangular wave, a sawtooth wave, a rectangular wave (including a square wave), and a sine wave is called a function signal generator. Function signal generators have a wide range of applications in circuit experiments and equipment testing. For example, in communication, broadcasting, and television systems, radio frequency (high frequency) transmission is required. The radio frequency wave here is a carrier wave. When audio (low frequency), video signal or pulse signal is carried out, an oscillator capable of generating a high frequency is needed.
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