Student Lab Manual

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INTRODUCTION TO THE TRAINER


The component module consists of:
- Four thyristors
- Three diodes
- One power transistor
- One triac
All components, except the transistor is protected by 10 A fuses and RC connection against
transient over voltages. The transistor is protected by a 1.6 A fuse.
The trigger module consists of:
- One universal trigger circuit for mains commutated applications.
- One trigger circuit for self commutated applications.
- One DIAC trigger circuit.
- One mains rectifier.
- Transformer, inductor and capacitors.


1. Aim of the experiment
The aim of this experiment is:
1. To study the basic properties of the diode.
2. To study and plot the conducting characteristics of the diode.
3. To study the diode operation as a half-wave rectifier.
2. Equipment and Components
1 Basic power electronic trainer model MV 4208
1 Variable resistor 100 Ω, 3A
1 Variable resistor 50 W, 500 Ω MV 1962
1 D.C. power Supply PL 310

2 Multimeters

3. Conducting the experiment
Part 1 Reverse-biased (blocked) diode operation
1. Connect the circuit as shown in Fig. 1.
2. Increase the voltage from 0 to 200V.
3. Read the current I on the meter.