Procedure

a) Circuit formulation:

Connect the diode bridge network with Input and output.
I. Drag one terminal of auto-transformer and connect it with first leg of diode bridge and second terminal with the second leg of diode bridge.
II. Similarly, connect the load with the given terminals of diode bridge network.

b) Principle of operation of the bridge rectifier: Diode bridge circuit operates in two modes as given below:

I. In positive half cycle, the diodes ‘D₁’ and ‘D₂’ are conducting while the diodes: ‘D₃’, ‘D₄’ are in blocking state.
II. Similarly, for negative half cycle ‘D₃’ and ‘D₄’ are conducting while the diodes ‘D₁’ and ‘D₂’ are in blocking state.

c) Performance analysis of the circuit:

I. Select the value of Load resistance (R) and Load inductance (L) out of three choices given.
II. With selected values of load (R and L), the filter capacitor (C_f) value is calculated.
III. Now, decide the ripple factor (how much ripple in output voltage can be allowed) and final calculate the filter inductor (L_f).
IV. After deciding the parameters, vary the “Source Voltage (v_ac)” in steps.
V. Press “RECORD” button to fill the table of observations.
VI. To observe various performance characteristics, select the parameter “icons” and then press “PLOT” icon.
VII. Repeat the above steps to observe various other performance characteristics with different values.