applied beyond this limit may damage the resistance or the diode. • In the forward bias, the current flow will be almost zero till it crosses the junction potential or knee voltage (approximately . V). Once knee voltage is crossed, the current increases with the applied voltage.
• The diode voltage in the forward direction should be increased in steps of . V to a maximum of . V after the threshold voltage to calculate the forward resistance. • The diode voltage in the reverse direction is increased in steps of V to a maximum of V.
The current must be measured using micro-ammeter as the strength of current in the reverse direction is very less. This is due to the flow of the minority charge carriers called the leakage current. XII- - ) XII- - ) - - - - PRACTICAL