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A JEFT is set up as a source follower. Given µ = 200, rd = 100 K and source load resistor RL = 1 K. The output resistance R0 is given approximately by—
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- 1000 ohm
- 500 ohm
- 333 ohm
- 666 ohm
Correct Option: C
In the case of source follower the approximate value of output resistance R0 is given by relation
| R0 ≅ | || RL | gm |
∴ µ = gm. rd
∴ µ = gm. rd
| gm = | = | = | rd | 100 × 103 | 103 |
| R0 ≅ | || 1000 | 2/103 |
| = | ≅ 333Ω | 1500 |
