MCQOPTIONS
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| 1. |
Consider a Darlington amplifier. In the self bias network, the biasing resistances are 220kΩ and 400 kΩ. What can be the correct value of input resistance if hfe=50 and emitter resistance = 10kΩ. |
| A. | 141 kΩ |
| B. | 15 mΩ |
| C. | 20 mΩ |
| D. | 200 kΩ |
| Answer» B. 15 mΩ | |