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ST2115
Scientech Technologies Pvt. Ltd.
38
Procedure:
1.
Connect the output of audio signal generator to the input of pulse width
modulator input.
2.
Observe the output of this modulator on your CRO screen. Turn the amplitude
and frequency knobs on the panel to witness the corresponding changes in the
pulse width modulated signal.
3.
Now connect the output of PW modulator to the Low pass filter & amplifier
block and observe the demodulated output. You can very the gain of this
amplifier by turning the gain knob given on the panel.
4.
Change the input signal characteristics e.g. amplitude or frequency to see the
corresponding changes in the demodulated signal.
5.
The amplitude of input signal and gain of the amplifier should be adjusted
such that there is minimum of nonlinearity defects in the output of
demodulator.
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Содержание ST2115
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