TESCA Regulated Power Supplies

Object:

1. To study half wave rectification.
2. To study full wave rectification.
3. To study measurement of ripple and ripple reduction methods using the following:
   1. Capacitor filter.
   2. Inductor filter.
   3. Choke input of L.C. filter.
   4. CLC or p filter.
4. To study Zener – diode voltage regulator circuit.
5. To study series voltage regulator.
6. To study series regulator with current limiting.
7. To study error feed-back type series voltage regulator.
8. To study the use of Darlington transistor pair for increasing the current capability of series voltage regulator.
9. To study a shunt voltage regulator with current limiting.
10. To study a shunt voltage regulator with adjustable current limiting.
11. To study a 0-9V D.C. continuously variable volt age regulated power supply and measure the following:
    1. Line regulation.
    2. Load regulation.
    3. Ripple factor.

Features:
The board consists of the following built-in parts :

• 9V A.C. at 300mA, Power Supply.
• 0-200mA Electronic load.
• Three NPN and one PNP transistor including a power transistor.
• 4 diodes, 3 Zener diodes, 2 potentiometers, 1 inductor.
• Adequate no. of other electronic components.
• 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.
• Weight : 3 Kg. (Approx.)
• Dimension : W 340 x H 110 x D 210

Other Apparatus Required:

1. 0-200 mA D.C. Milliammeter
2. 0-15VD.C. Voltmeter
3. Variac 0-270 Volts at 2 Amp
4. Cathode Ray Oscilloscope 20MHz