Diode Characteristics

    Diode IV characteristic can be obtained easily using the DAC and ADC features. Connect one end of a 1 KOhm resistor to the DAC output. The other end is connected to the ADC Ch0 Input. Positive terminal of the diode also is connected to the ADC Ch0 and negative to ground. The Voltage across the diode is directly measured by the ADC and the current is calculated using Ohm's law since the voltage at both ends of the 1 KOhm resistor is known.

This experiment can be done using this GUI or using this small Python program.

The IV curve of several diodes shown below, note that the LEDs start conducting a larger voltages.