Electronic Educational Trainers,Educational Trainers Manufacturers
Home Page Didactic Products Training Kits OEM Trainers Send Enquiry Contact Us About Us
Didactic Trainers & Learning Systems
Technical Education Equipment  Educational Trainers
Technical Education Equipment  Antenna,Satellite,Radar,RF
Technical Education Equipment  Microwave Test Benches
Technical Education Equipment  Analog Electronics Trainer
Technical Education Equipment  Bread Board Trainers
Technical Education Equipment  Communication Trainers
Technical Education Equipment  Consumer Electronics Trainers
Technical Education Equipment  Digital Electronics Trainer
Technical Education Equipment  Educational Motors & Machines
Technical Education Equipment  Fiber Optic Trainers
Technical Education Equipment  Instrumentation Trainers
Technical Education Equipment  Power Electronics Trainers
Technical Education Equipment  Embedded / Microprocessor Trainers
Technical Education Equipment  Robotic Kits / Trainers
Technical Education Equipment  Hand Tools
Technical Education Equipment  Soldering, DeSoldering Stations
Technical Education Equipment  IC Testers & Programmers
Technical Education Equipment  Test, Measuring Instruments
Technical Education Equipment  Oscilloscopes
Technical Education Equipment  Meters (A,V)
Technical Education Equipment  Decade Boxes (R - L - C)
Technical Education Equipment  Variac / Dimmerstats
 
 
 
Home » Products » Educational Trainers » Power Electronics Trainers » UJT Relaxation Oscillator

Power Electronics Trainers » UJT Relaxation Oscillator

UJT Relaxation Oscillator

steppermotor-control-using-ic-saa-1027

UJT Relaxation Oscillator Features:

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 SCR's and TRIAC’s. This Training Board can also make use for designing firing circuits and control circuits for thyristors.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:
01. An isolation transformer 230V A.C. at 100mA. This protects external instruments from damage if they are not isolated.
02. 20V D.C. at 100mA, IC Regulated Power Supply internally connected.
03. Bridge rectifier and zener regulator
04. Potentiometer for frequency control.      
05. Two band switches for selecting different value of resistance and capacitance.
06. Pulse transformer 1:1:1.
07. UJT 2N 2646 under experiment
08. Adequate no. of other Electronic Components
09. 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.
  • Weight : 3 Kg. (Approx.)
  • Dimension : W 340 x H 110 x D 210
  • Other Apparatus Required:
  • Digital Multimeter 3¾ digit - Order Code 16901
  • 0-30V, 1Amp IC Regulated Power Supply
  • Dual Trace Cathode Ray Oscilloscope 20 MHz (Unearthed)
  • Variac, 0-230VA.C. @ 2Amp

 

Educational Trainers & Teaching Products - Educational Trainers & Didactic Products for Technical Training in Universities, Engineering Colleges, Vocational Schools & Polytechnics Institutes

	Power Electronics Trainers Power Electronics Trainers

DidacticUniversal Motor Speed Control
DidacticStepper Motor Control Using IC SAA-1027
DidacticUJT Relaxation Oscillator
DidacticStudy of SCR and A.C. Phase Control
DidacticDV/DT Limitation of SCR’s
DidacticStudy of Triac and A.C. Phase Control
DidacticSCR Converters and Reactive Loads
DidacticSCR Triggering Circuit Using IC TCA-785
DidacticSCR Ring Counter
DidacticThyristor Alarms
DidacticThyristor Time Delay Relay
DidacticTriac A.C. Line Switching
DidacticSCR Regulated D.C. Power Supply
DidacticTo Trigger a SCR by Using a LDR
DidacticSingle Phase Fully- Controlled Bridge Converter
DidacticSCR D.C. Circuit Breaker
DidacticSCR Lamp Flasher
DidacticTriggering Circuits for SCR
DidacticSingle Phase Half Wave Controlled Converter
DidacticSingle Phase Half Controlled Symmetrical & Asymmetrical Converter
DidacticAC Regulators Using Triac, Anti Parallel Thyristor and Triac & Diac
DidacticSingle Phase PWM Converter
DidacticFiring Circuit Using Ramp Comparator Scheme
DidacticFiring Circuit Using OP-AMPS And Gates
DidacticFiring Circuit Using Cosine-Wave Scheme
DidacticSingle Phase Series Inverter
DidacticSCR Parallel Inverter
DidacticSingle Phase Transistorised Bridge Inverter
DidacticForced Commutated Circuits
DidacticVoltage Commutated Thyristorised Chopper
DidacticCurrent Commutated Thyristorised Chopper
DidacticEffect of Free Wheeling Diode in Single Phase Fully Controlled Converter
DidacticTo Study And Plot VI Characteristics of a PowerMosfet
DidacticUJT Firing Circuit Of SCR
DidacticLamp Dimmer Using Diac and Triac
DidacticIllumination Control Using SCR
DidacticFan Regulator Using Diac and Triac
DidacticSCR Controlled Emergency Light
DidacticElectronic Timer Using IC-555
DidacticThree Phase Half Wave Rectifier
Didactic3 Phase Full Wave Rectifier
Didactic3 Phase Half Controlled Thyristorized Bridge Converter - Triggering Circuit
Didactic3 Phase Fully Controlled Thyristorized Bridge Converter - Triggering Circuit
DidacticZero Voltage Switching
DidacticPower Transistor Characteristics
DidacticD.C. Step Down Mosfet Chopper
DidacticD.C. To A.C. Inverter (Input 12V DC 80AH Output 230VAC, 40W)
DidacticStep Up & Step Down Transistor Chopper
DidacticStudy & Plot V/I Characteristic of Power IGBT
DidacticStudy of Buck Boost Principle
DidacticStudy of Current Transformer (C.T.)
DidacticStudy of Potential Transformer (P.T.)
DidacticStudy of Instrument Transformers (C.T & P.T.)
DidacticR.M.S. and Average Values of Rectified Voltage
DidacticDetermination of Fusing Characteristics and Fusing Factor of Given Fuse
DidacticSingle Phase Half Wave & Bridge Controlled Rectifier

 
Educational Trainers & Teaching Products - Technical Teaching Equipment. Electronic Educational Equipment. Didactic Equipment for Technical Training. Engineering Teaching Equipment. Equipment for Electronics Engineering Education. Educational Trainers, Antenna,Satellite,Radar,RF, Microwave Test Benches, Analog Electronics Trainer, Bread Board Trainers, Communication Trainers, Consumer Electronics Trainers, Digital Electronics Trainer, Educational Motors & Machines, Embedded / Microprocessor Trainers, Fiber Optic Trainers, Instrumentation Trainers, Power Electronics Trainers, Robotic Kits / Trainers, Hand Tools, IC Testers & Programmers, Soldering,DeSoldering Stations, Test, Measuring Instruments, Oscilloscopes, Digital Storage Oscilloscopes, Power Supplies, Spectrum Analyzers, Signal Generators, Power Supplies, Decade Box (R, L, C), Variac / Dimmerstats.
Kits & Trainers

Educational Trainers  About Us
Educational Trainers  Didactic Products
Educational Trainers  Contact Us

© 2011 | Home