diff --git a/experiment/procedure.md b/experiment/procedure.md
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--- a/experiment/procedure.md
+++ b/experiment/procedure.md
@@ -1 +1,145 @@
-### Procedure
\ No newline at end of file
+### Procedure
+
+
+### For “Low frequency switching device (SCR)”
+
+**1.  'v-i' Characteristics using meters:**
+
+a)	Click on ‘Connections’ icon. A table containing  all will terminals appear.
+
+b)	Click on each starting terminal and observe the corresponding connection.
+
+c)	After all nodes are connected, Click on ‘Connections Completed’ icon.
+
+d)  ‘Switch- ON’ the main supply (V<sub>in</sub>).
+
+e)  Click on ‘Start Experiment’ icon.
+
+
+**On the Experiment page:**
+
+a)	Observe the ‘v-i’ characteristics plotted on the graph on the right side. They are plotted for three different values of gate currents (Ig) by using the data logging features of the meters.
+
+**2.  'v-i' Characteristics using probes and oscilloscope:**
+
+a)	Click on ‘Connections’ icon. A table containing  all will terminals appear.
+
+b)	Click on each starting terminal and observe the corresponding connection.
+
+c)	After all nodes are connected, Click on ‘Connections Completed’ icon.
+
+d)  ‘Switch- ON’ the main supply (V<sub>in</sub>).
+
+e)  Click on ‘Start Experiment’ icon.
+
+
+**On the Experiment page:**
+
+a)	Click on the ‘R<sub>g</sub>’ slider to set it at an initial maximum value of 25 kΩ. This sets the gate current (I<sub>g</sub>) to zero.
+Click on the Resistance icon- ‘R’ to set the load.
+
+b)	Click on the ‘v<sub>in</sub>’ slider to set the main supply voltage to 15 V (rms)
+
+c)	Click on the ‘plot’ icon. Observe the Reverse blocking and Forward blocking characteristics on the graph.
+
+d)	Click on the ‘R<sub>g</sub>’ slider to set it to 750 Ω. Observe the gate current ‘I<sub>g</sub>’. Click on the ‘plot’ icon. Observe the forward conduction characteristics of the SCR.
+
+e)	Repeat Step-4 for R<sub>g</sub> = 150 Ω and 50 Ω.
+
+
+### For “Medium frequency switching device (IGBT)”
+
+**Output Characteristics using probes and oscilloscope:**
+
+a)  Click on ‘Make connections’ icon.
+
+b)  A table listing all the terminals pops up. This a simple series circuit. Click on each ‘From’ terminal one after the other.
+
+c)  Observe the simultaneous connection being formed.
+
+d)  Once all the terminals are connected, click on ‘Connections Completed’ icon.
+
+e)  ‘Switch- ON’ the main supply.
+
+f)  ‘Switch- ON’ the Gate-to-Source supply.
+
+g)  Click on ‘Start Experiment’.
+
+
+**On the Experiment page:**
+
+a)  Click on the Resistance icon- ‘R’ to set the load.
+
+b)  Set the initial Gate-to-Source voltage ‘V<sub>GS</sub>’ using the slider.
+
+c)  Vary the Main voltage (V<sub>in</sub>) using the “V<sub>in</sub>” slider.
+
+d)  Click on ‘Plot’ to trace the characteristics.
+
+e)  Repeat Steps-2 to 4 for a total of five values of Gate-to-Source voltage (V<sub>GE</sub>).
+
+
+### For “High frequency switching device (MOSFET)”
+
+**Output Characteristics using probes and oscilloscope:**
+
+a)  Click on ‘Make connections’ icon.
+
+b)  A table listing all the terminals pops up. This a simple series circuit. Click on each ‘From’ terminal one after the other.
+
+c)  Observe the simultaneous connection being formed.
+
+d)  Once all the terminals are connected, click on ‘Connections Completed’ icon.
+
+e)  ‘Switch- ON’ the main supply.
+
+f)  ‘Switch- ON’ the Gate-to-Source supply.
+
+g)  Click on ‘Start Experiment’.
+
+
+**On the Experiment page:**
+
+a)  Click on the Resistance icon- ‘R’ to set the load.
+
+b)  Set the initial Gate-to-Source voltage ‘V<sub>GS</sub>’ using the slider.
+
+c)  Vary the Main voltage (V<sub>in</sub>) using the “V<sub>in</sub>” slider.
+
+d)  Click on ‘Plot’ to trace the characteristics.
+
+e)  Repeat Steps-2 to 4 for a total of five values of Gate-to-Source voltage (V<sub>GS</sub>).
+
+
+**1.  Output Characteristics using meters:**
+
+a)  Click on ‘Make connections’ icon.
+
+b)  A table listing all the terminals pops up. This a simple series circuit. Click on each ‘From’ terminal one after the other.
+
+c)  Observe the simultaneous connection being formed.
+
+d)  Once all the terminals are connected, click on ‘Connections Completed’ icon.
+
+e)  ‘Switch- ON’ the main supply.
+
+f)  ‘Switch- ON’ the Gate-to-Drain supply.
+
+g)  Click on ‘Start Experiment’.
+
+
+**On the Experiment page:**
+
+a)  Click on the Resistance icon- ‘R’ to set the load.
+
+b)  Set the initial Gate-to-Source voltage ‘V<sub>GS</sub>’ using slider.
+
+c)  Set the main supply voltage (V<sub>in</sub>) using the slider.
+
+d)  Keep changing the main supply using the slider till table is filled.
+
+e)  Click on ‘Plot’ to trace the characteristics.
+
+f)  Repeat Steps-2 to 5 for a total of 5 values of Gate-to-Source voltage (V<sub>GS</sub>).
+
+