csnotes/337/lec/lec6.md
2019-09-24 11:34:35 -07:00

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# lec6
> diagrams needed for this section
## Transistors
Two types of transistors will be discussed here: `NPN` and `PNP`.
Both types however, do share some properties here by referred to as the following:
* E = Emitter
* B = Base
* C = Collector
### NPN
![](../img/lec6npn.png)
Current will __not__ flow across collector through base into emitter if do nothing.
When we apply a current to the base then current flows through the transistor.
### PNP
![](../img/lec6pnp.png)
Current will flow across emitter through base into collector if we don't do anything.
When we apply a current to the base then current flow stops.