Key Points
- A bipolar transistor is an npn or pnp structure
with three contacts emitter/base/collector.
- Minority injection device.
- Diffusion across base controls current in normal mode
- Normal mode fwd bias base-emitter, rev. bias
base-collector
- Injection device so currents exp. related to applied
volatages
- Ie linearly proportional to Ib in normal operation
Questions
- Draw the physical structure and band diagram for npn
transistor in equlibrium and fwd bias.
- What causes the flow of electron across the base in a
bipolar transistor?
- Is the bipolar transistor a linear device?