Saved Bookmarks
| 1. |
(a) Describe briefly the functions of the three segments of n-p-n transistor. (b) Draw the circuit arrangment for studying the output characterstics of n-p-n transistor in CE configuration. Explain how the output characterstics is obtained. |
|
Answer» Solution :(a) A junction transistor is obtained by growing a thin layer of ONE type semi-conductor in between two thick layers of other similar type semi-conductors. Three layers and functions Emitter( E) : The left hand thick layer of the transistor which is heavily doped and moderate in size is called emitter. If emits majority charge carriers.  Output Characteristics : The variation fo the collector. Current `(I_(C))` with the collector emitter voltage `(V_(CE))` keeping the base current `(I_(b))` constant is called output characteristics. (i) Baxe (B) : It is a central thick layer of the transistor which is lightly DEPED. Correlates INTERACTION between emitter and collector. (iii) Collector ( C) : The right hand hand side thick layer of the transistor which is moderately deped is called collector. It collect the majority charge carriers. 
|
|