Answer
Verified
357k+ views
Hint: When a voltage is applied to the forward characteristics of a diode, the junction rapidly expands. The terms "knee voltage" and "cut in voltage" refer to the same thing.
Complete answer:
Knee voltage or cut-in voltage of PN junction diode is the voltage at which the forward-biased diode begins to conduct.
The barrier potential or built-in potential is created when the p- and n- junctions are linked. When the positive terminal of the battery is connected to the anode and the negative terminal is connected to the cathode, the diode is forward biased and will not conduct unless the battery voltage is greater than the barrier potential. The germanium and silicon diodes have barrier potentials of \[0.3\] and \[0.7\] , respectively. If the battery voltage is greater than \[0.7\], the silicon diode begins to conduct in forward biased mode.
Knee point voltage, also known as diode cut-in voltage, is the minimum voltage at which the diode begins to conduct heavily and current begins to increase rapidly in a forward biased state. The concept of the diode's knee point voltage can be further appreciated by looking at the diode's forwarding properties.
Note:
The diode is forward biased by applying a positive and negative voltage at the anode and cathode of the diode respectively. The applied voltage is increased gradually from zero voltage. The silicon diode does not conduct till voltage reaches \[0.7{\text{ }}volts\] . The germanium diode does not conduct till voltage reaches \[0.3{\text{ }}volts\] . The \[0.7{\text{ }}volts\] and \[0.3{\text{ }}volts\] are the cut-in or knee voltage of the silicon and germanium diodes respectively. When the applied voltage reaches cut-in or knee voltage the diode starts heavily conducting.
Complete answer:
Knee voltage or cut-in voltage of PN junction diode is the voltage at which the forward-biased diode begins to conduct.
The barrier potential or built-in potential is created when the p- and n- junctions are linked. When the positive terminal of the battery is connected to the anode and the negative terminal is connected to the cathode, the diode is forward biased and will not conduct unless the battery voltage is greater than the barrier potential. The germanium and silicon diodes have barrier potentials of \[0.3\] and \[0.7\] , respectively. If the battery voltage is greater than \[0.7\], the silicon diode begins to conduct in forward biased mode.
Knee point voltage, also known as diode cut-in voltage, is the minimum voltage at which the diode begins to conduct heavily and current begins to increase rapidly in a forward biased state. The concept of the diode's knee point voltage can be further appreciated by looking at the diode's forwarding properties.
Note:
The diode is forward biased by applying a positive and negative voltage at the anode and cathode of the diode respectively. The applied voltage is increased gradually from zero voltage. The silicon diode does not conduct till voltage reaches \[0.7{\text{ }}volts\] . The germanium diode does not conduct till voltage reaches \[0.3{\text{ }}volts\] . The \[0.7{\text{ }}volts\] and \[0.3{\text{ }}volts\] are the cut-in or knee voltage of the silicon and germanium diodes respectively. When the applied voltage reaches cut-in or knee voltage the diode starts heavily conducting.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
During the region of which ruler Moroccan Traveller class 12 social science CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Which are the Top 10 Largest Countries of the World?
Write a letter to the principal requesting him to grant class 10 english CBSE
A milkman adds a very small amount of baking soda to class 10 chemistry CBSE