Chapter 4: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 21: | Line 21: | ||
| RB || RB || Cutoff | | RB || RB || Cutoff | ||
|} | |} | ||
*What are the Saturation, Reverse Active and Cutoff regions used for? | |||
*Why do we always seem to use a common emitter configuration? | |||
Revision as of 10:40, 3 March 2010
Bipolar Junction Transistor
- NPN: Not Pointing iN
- PNP: Pointing iN Please
- The arrow is for the emitter current. For an NPN the current flows into the collector. For a PNP the current flows out of the collector.
How a BJT works
Large-Signal DC models
| Base-Emitter | Collector-Emitter | Region |
|---|---|---|
| FB | FB | Saturation |
| FB | RB | Active |
| RB | FB | Reverse Active |
| RB | RB | Cutoff |
- What are the Saturation, Reverse Active and Cutoff regions used for?
- Why do we always seem to use a common emitter configuration?