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“Here’s the popular “science experiment” of a phone made from tin cans and some kite string. This time instead of sending voice from one can to the other, data will be sent using a short beep for 0 and …
Content for LM567
The LM567 and LM567C are general purpose tone decoders designed to provide a saturated transistor switch to ground when an input signal is present within the passband. The circuit consists of an | and Q detector driven by a voltage controlled oscillator which determines the center frequency of the decoder. External components are used to independently set center frequency, bandwidth and output delay.