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Product Description


This has IC 741 asdifferential amplifier, Integrator, RC network and modulator are wired as toform a Delta Modulation circuit to provide the DM output for the appliedmodulating AF input signal. facility to control the Clock signal, Sine wavesignal generators (1No) and Square wave signal generators (1No) with variablefrequency upto 100KHz and amplitude. facility to control carrier signal.

DM Demodulation

This has OP-AMP IC741 as an Integrator, RC network and low pass filter wired as to form a Delta Demodulationcircuit to provide the demodulated output for the applied DM input signal. Maximummodulating frequency 10KHz, maximum carrier frequency 100KHz, Bandwidth 3KHz,Discrete level circuit, Built-in fixed DC ±12V/1A Power supply and maximum testpoints.


  • To study theprinciple and circuit of Delta Modulation (DM).
  • To observe and noteDM O/P for the applied modulating AF input and carrier input.
  • To observe and notethe change in DM O/P w.r.t change in modulating input.
  • To observe the effecton DM O/P w.r.t change in carrier input.
  • To study thelimitations and distortions of DM.
  • To study theprinciple and circuit of Delta Demodulation.
  • To observe and notedemodulated O/P for the applied DM input.
  • To observe the changein Demodulated O/P w.r.t change in modulating AF input of DM.
  • Toobserve the effect on demodulated O/P w.r.t change in carrier input of DM.


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