Experimental Training Board has been designed specifically to study the characteristics of TRIAC-a Bidirectional Triode Thyristor.

Practical experience on this board carries great educative value for Science and Engineering Students.

Object:

1. To study the gate characteristics of a TRIAC in the following modes :
(a) Mode I+ : i.e. T2 positive with respect to T1 and gate positive with respect to T 1
(b) Mode I- : i.e. T2 positive with respect to T1 and gate negative with respect to T 1
(c) Mode III+ : i.e. T2 negative with respect to T1 and gate positive with respect to T 1
(d) Mode III- : i.e. T2 negative with respect to T1 and gate negative with respect to T 1
2. To study the terminal characteristics of a TRIAC in the following modes :
(a) Mode I+ : i.e. T2 positive with respect to T1 and gate positive with respect to T 1
(b) Mode III+ : i.e. T2 negative with respect to T1 and gate positive with respect to T 1
3. To study the following applications of TRIAC :
(a) Triac as a static switch (D.C. control).
(b) Control of A.C. with A.C. signal.
(c) To measure the holding current of IH. Triac.

Features

The board consists of following built-in parts:

1.  0-70V D.C. at 100mA, regulated Power Supply.
2.  0-3V D.C. at 30 mA, regulated Power Supply.
3.  55 Volt at 100mA, fixed A.C. Supply.
4.  7 Volt at 30mA, fixed A.C. Supply.
5.  Digital Current meter DC 3½ Digit having Dual range of 20mA / 200mA .
6.  Digital Voltmeter DC 3½ Digit having Dual range of 2V / 200V.
7.  Digital Current meter DC 3½ Digit range of 200mA .
8.  TRIAC.
9.  Three Potentiometers of 100K, 10K and 220 Ohm.
10.  Reset switch.
11.  Adequate no. of other electronic components.
12.  Mains ON/OFF switch, Fuse and Jewel light.

• The unit is operative on 230V ±10% at 50Hz A.C. Mains.
• Adequate no. of patch cords stackable from rear both ends 4mm spring loaded plug length ½ metre.
• Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections / observation of waveforms.
• Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.

Other Apparatus Required

• Cathode Ray Oscilloscope 20MHz