Saved Bookmarks
| 1. |
Defineinput resistance, output resistance and current amplification of a transistor. |
|
Answer» SOLUTION :Input RESISTANCE : It is the ratio of change in base-emitter voltage and the CORRESPONDING change in base current at constant collector-emitter voltage. i.e., `R_"in"=((DeltaV_(BE))/(DeltaI_B))` at constant `V_(CE)` Output resistance : It is the ratio of the change in collector-emitter voltage to the corresponding change in collector current at a constant base current. i.e., `R_"out"=((DeltaV_(CE))/(DeltaI_C))` at constant `I_B` Current amplification : It is the ratio of change in collector current and the change in base current at constant collector -emitter voltage when the transistor is in ACTIVE state `beta_(ac)=((DeltaI_C)/(DeltaI_b))` at constant `V_(CE)` |
|