Study of UJT and UJT Relaxation Oscillator with Power Supply
Order Code: 46518
Category: Electrical Machine Lab
Power Electronic Training Board has been designed specifically for the study of Electrical Characteristics of Uni- Junction Transistor. The UJTs are widely used for Relaxation Oscillator, waveform & pulse generators and firing circuits of SC...
SPECIFICATION
Practical experience on this board carries great educative value for Science and Engineering Students.
Object:
- Study of Zener Diode as Voltage Regulator
- Study of Static Emitter Characteristics of UJT- Unijunction Transistor on oscilloscope.
- Study of effect of V on peak point and valley point voltage and valley point current. BB
- Operation of UJT Relaxation Oscillator and its use as SCR trigger circuit.
- Control of UJT trigger Pulses with shunt transistor.
- Study of Variations in gate resistance & capacitance, resistance of source & drain and their effect on trigger pulse characteristics of UJT relaxation oscillator.
- Various Configurations of UJT relaxation oscillator type 1(low output impedance), type 2 (moderate output impedance) and type 3 (high output impedance).
Features:
The board consists of following built-in parts:
- An isolation transformer 230V A.C. at 100mA. This protects external instruments from damage if they are not isolated.
- 20V D.C. at 100mA, IC Regulated Power Supply internally connected.
- Bridge rectifier and zener regulator.
- Potentiometer for frequency control.
- Two band switches for selecting different value of resistance and capacitance.
- Pulse transformer 1:1:1.
- UJT 2N 2646 under experiment.
- 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 4 mm 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.
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