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Dial Tone And Signal Generator Circuit

2017-08-16 21:32  
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A tone generator, also known as a signal generator, can be described in at least two contexts: electronic audio acoustics and equipment testing and setup, or informational signals, commonly associated with a telephone system.In each case, electrically generated audio pulses are sent to specific components. In the case of audio equipment testing, frequency response and sound evaluation are noted, and the acoustic properties of a studio or hall may be determined.The circuit requires a minimum of parts and uses a iow cost standard 379545-MHz television color-burst crystal.The speaker can be eliminated and the output fed directly into the microphone input of a transmitter. With a telephone system, the dial tone, busy signal, and ring tone are the result of this pulsed tone generation.
 

Tone dial generator