☞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
☞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.
Note: If the connections are made wrong the kit may get damaged. Please switch off the kit when not in use.
IG = ………………….mA
|S.NO.||VAK (V)||IA (mA)|