The ratio (R) of output resistance r_0 and in | vedclass

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(A) In a transistor,the input resistance $r_i$ is generally low,while the output resistance $r_0$ is generally high.For a Common Base $(CB)$ configura

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$R \approx 10^2 - 10^3$

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(A) In a transistor,the input resistance $r_i$ is generally low,while the output resistance $r_0$ is generally high.For a Common Base $(CB)$ configuration,the input resistance $r_i$ is very low (a few $\Omega$) and the output resistance $r_0$ is very high (in $k\Omega$). Thus,the ratio $R = \frac{r_0}{r_i}$ is typically in the range of $10^2$ to $10^3$.For Common Emitter $(CE)$ and Common Collector $(CC)$ configurations,the ratio is also significantly greater than $1$.Therefore,the typical range for the ratio $R = \frac{r_0}{r_i}$ is $10^2 - 10^3$.

The ratio $(R)$ of output resistance $r_0$ and input resistance $r_i$ in measurements of input and output characteristics of a transistor is typically in the range:

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