Page 290 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 200&201: Single phase Half controlled and Full

Controlled rectifiers

Objectives

At the end of this exercise you shall be able to
• to obtain the characteristics of three-phase, half-wave, uncontrolled rectifier circuit feeding a resistive load
• the characteristics include (average load voltage and current, diode voltage and supply power factor)
• to obtain the characteristics of single-phase, full-wave, uncontrolled rectifier circuit feeding a resistive load
• the characteristics include (average load voltage and current, diode voltage and supply power factor).

Requirements

Tools/Equipments/Instruments

• Screw driver kit - 1 No. • Variable Resistive Load 700mH - 1 No.
• Combination plier - 1 No. • Switched capacitive load 4kvar - 1 No.
• Circuit tester - 1 No. • General purposes dual beam
• Manual guide - 1 No. oscilloscope 0-30mhz - 1 No.
• AC/DC digital voltmeter/ammeter - 1 No.
Materials/Components
• Moving iron voltmeter/ammeter - 1 No.
• Three-phase power supply • Set of patched lead - 1 No.
415V, 16A - 1 No.
• Three-phase resistive load
415V, 16A - 1 Nos.

Procedure

TASK 1 :
1 Connect the circuit shown :
2 Draw the waveforms of the load voltage, load current and diode voltage
3 Compute the average values of the load voltage and current
4 Measure the average values of the load voltage and current
Table 1

Average voltage Average current
Computed values
Measured values

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