objective
To measure the V/I characteristics of PN junction diodes point by point and curve tracing (statically and dynamically).
Tools
DC voltage source , Voltmeter , Diodes board (include different type of diodes ) , wires of connection.
Steps
Firstly, in this experiment, it was suppose to start with potential difference of 0.5 volt, so we achieve that by adjusting the voltage source to be exactly 0.5 volt First phase " Forward connection " Connect the positive (+) terminal that comes from the voltage source to the positive terminal of the diode board (it is located at the up left corner), and the negative terminal to the ground pin at the diodes board. Then, connect from the positive pin at the board to the anode of D1 and the ground pin to the cathode. Measure the value of the potential difference across R3 which is V4, that could achieved by using the voltmeter, connect the positive (+) terminal of the voltmeter to the node 4, and the negative (-) terminal to the ground. Do the same thing to found the value of the voltage of the diodeV6. Calculate the value of the current that flow through each diode by using the formula (V4-V6)/1100. change the power supply voltage to 1, 1.5, 2.0, 5, 8, 10 V. Second phase "Reverse connection" Here , it is suppose to change the polarity of the voltage terminal, and this could achieved by replace the connection wires (the positive to the place of the negative and vice versa ) at the voltage source. Find the value of the voltage across R4 (V5) and across the diode (V6). Calculate the value of the current that flow through each diode by using the formula (V5 - V6 /100) change the power supply voltage to -0.5 ,-1 , -1.5, -2.0, -5, -10, -20 V.

Repeat the previous steps on diodes D1 , D3 and D6.

Result
The result of this experiment are shown in Table 1 and Table 2 as following
(V4 - V6)/1100 = ID