Physics · Semiconductors, semiconductor diode: I-V characteristics in forward and reverse bias, diode as a rectifier
The ratio (R) of output resistance and and the input resistance in measurements
The ratio (R) of output resistance \( r_{0} \) and and the input resistance \( r_{i} \) in measurements of input and output characteristics of a transistor is typically in the range:
- A. \( R \sim 10^{2}-10^{3} \)
- B. \( R \sim 1-10 \)
- C. \( R \sim 0.1-1.0 \)
- D. \( R \sim 0.1-0.01 \)
Step-by-step solution
In a common emitter transistor configuration, the input resistance (base-emitter) is typically in the range of hundreds to thousands of ohms (10^2-10^3 Ω), while the output resistance (collector-emitter) is much higher, typically tens to hundreds of kilo-ohms (10^4-10^5 Ω). Thus the ratio of output to input resistance is of the order 10^2 to 10^3.