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Study of Single Phase PWM Modulator

The following experiments may be performed :

    1. Connect R- load and observe the variation of the output voltage and output current with changes in the pulse width ( duty cycle ) and frequency respectively in both synchronized and variable modes. Observe the input current waveform also. Also see the waveforms across the power transistor.
    2. Repeat the above test for an R- L load.

The trainer consists of the following :

    1. Diode and power transistor based module.
    2. Control circuit module.
    3. Loads and associated circuits.

Additional Accessory Required :

  • Dual Channel Oscilloscope