Question
Download Solution PDFA triode used as an amplifier has amplification factor of 15. The AC plate resistance is 10 KΩ and load resistance is 20 KΩ. Find the voltage gain of amplifier.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe Correct option is 1
Concept
Plate resistance, r p = 10 KΩ.
Load resistance, r L = 20 KΩ.
Amplification factor = 15
Voltage gain = \(\mathbf{\frac{Amplification factor}{1+\frac{r_{p}}{r_{L}}}}\)
Calculation
Voltage gain = \(\mathbf{\frac{Amplification factor}{1+\frac{r_{p}}{r_{L}}}} = \mathbf{\frac{15}{1+\frac{10}{20}}}\) = 10
Additional point
Amplifier
| Characteristics | Value |
| Open loop gain | \(\infty \) |
| Input resistance | \(\infty \) |
| output resistance | 0 |
| offset voltage | 0 |
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