VI Characteristics of SCR

VI Characteristics of SCR

Tags: VI Characteristics of SCR, Voltage with current Characteristics of SCR, Graph for characteristics of SCR, Procedure for characteristics of SCR, Forward Characteristics of SCR,,
Overall rating

To Study and verify VI characteristics of SCR.Using VI characteristic of IGBT,MOSFET,SCR unit.

Apparatus required

  • VI Characteristics of SCR kitc
  • Patch cards
  • Power card

Circuit Diagram


Initial Settings

  • Ensure the 230V Power Supply is in proper with Tester.
  • Check the input supply of the kit and off the switches of the kit.

Mimic Diagram for SCR

Experiment Steps

  • Connections are made as shown in the circuit diagram.
  • Switch on SW2 observe whether meter are reading 0.
  • Set both voltages to minimum position, and then switch on SW1.
  • Increase VAK voltage to maximum position.
  • Now slowly increase the voltage across VGK at certain voltage SCR is turned on stop varying the voltage at that point.
    Note: It may turn on around 3V.
  • Then reduce the voltage VAK to minimum position, don’t vary the VGK and Switch off SW1.
  • Now Switch on SW1 then note down the readings.
  • Now vary VAK voltage slowly, correspondingly note down the VAK and IA readings and plot the graph.
  • Repeat from step 2 for another value of gate current IG.


If the connections are made wrong the kit may get damaged. Please switch off the kit when not in use.


IG = ………………….mA










Model Graph


Join the World's Largest Technical Community

we respect your privacy.