Here the applied voltage V on the diode is changed by the potential divider arrangement which can be easily read by the voltmeter connected in parallel to the diode. The current I flowing in the diode related to various values of voltages are noted by a milliammeter. In this way, the curve obtained for different values of V and I is shown in the figure. (14.17), which is also called as the P-N junction diode forward bias characteristic curve.
