Pnp transistor voltage/current graph

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In a PNP transistor, the current initially increases with applied voltage until it reaches a threshold known as the barrier potential, typically around 0.7V for silicon and 0.3V for germanium. Once this barrier is crossed, the current stabilizes and becomes constant because there is no further voltage drop across the p-n junction. This behavior is due to the characteristics of the transistor and the properties of the semiconductor material. Understanding this current-voltage relationship is crucial for effective transistor operation. The discussion highlights the importance of barrier potential in determining current flow in PNP transistors.
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in pnp transistor after some time on increasing voltage why the current become constant ?
 
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XuFyaN said:
in pnp transistor after some time on increasing voltage why the current become constant ?
which voltage you are talking about? if it is base voltage then it might be follows.
when applied voltage is given to transistor the current increases slowly.when applied voltage crosses the barrier potential of p-n junction(for si=0.7v and ge=0.3v) then the current becomes constant as no voltage drop across p-n junction.
 
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