Electronic Circuits/Determining Transistor modes
- Question 1 Determine the mode the NPN transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with no threshold voltage.
| Case | Vc | Vb | Ve |
|---|---|---|---|
| A | 5v | 0v | -1v |
| B | 3v | 0v | -1v |
| C | 2v | 0v | 2v |
| D | 5v | 0v | 4v |
| E | 5 | 1 | 2 |
| F | 0v | 0v | 0v |
| G | 3v | 0v | 3v |
| H | 10v | 0v | -2v |
| I | -3v | 0v | -3v |
| J | 5 | 11 | -2 |
| K | 2 | 5 | -3 |
| L | 7v | 0v | -10v |
- Question 2 Determine the mode the PNP transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with no threshold voltage.
| Case | Vc | Vb | Ve |
|---|---|---|---|
| A | 5v | 0v | -1v |
| B | 3v | 0v | -1v |
| C | 2v | 0v | 2v |
| D | 5v | 0v | 4v |
| E | 5 | 1 | 2 |
| F | 0v | 0v | 0v |
| G | 3v | 0v | 3v |
| H | 10v | 0v | -2v |
| I | -3v | 0v | -3v |
| J | 5 | 11 | -2 |
| K | 2 | 5 | -3 |
| L | 7v | 0v | -10v |
- Question 3 Determine the mode the NPN transistor is in based on the voltages measured at the terminals with respect to ground. Assume The simplified diode model with a Thershold voltage of Vbe(on) = .5v and Vbc(on) = .4v
| Case | Vc | Vb | Ve |
|---|---|---|---|
| A | 5v | 3v | 0v |
| B | 3v | 0v | -1v |
| C | 2v | 0v | 2v |
| D | 5v | 0v | -1v |
| E | 5 | 10 | 2 |
| F | 0v | 0v | 0v |
| G | -3v | 0v | 3v |
| H | 10v | 0v | -2v |
| I | -3v | 0v | -3v |
| J | -5 | 11 | -2 |
| K | 2 | 5 | -3 |
| L | 7v | 10v | -10v |
| M | 0v | 10v | -.1v |
| N | 2.2v | 1v | -1v |
| O | 7v | 0v | -3v |