Transistor Characteristics and Properties Flashcards
What is a transistor?
Semiconductor device with 3 connections, capable of amplification and rectification
What are the three parts of a transistor?
The emitter, the base and the collector.
What is the emitter in a transistor?
It gives off current carriers (electrons or holes)
What is the base in a transistor?
It controls the flow of current carriers.
What is the collector in a transistor?
It collects the current carriers
What type of transistor has an arrow pointing inwards?
PNP (point)
What type of transistor has an arrow pointing outwards?
NPN (not pointing)
The tab on a transistor case indicates what?
The emitter
The resistance measured using an AVO between the Collector and the Emitter of a transistor is…
The same both ways
For an NPN transistor to conduct, the collector circuit must be…
More positive than the base
Which way does conventional current flow in a PNP junction?
Emitter to base
What symbol does ‘current gain’ have in a common emitter amplifier?
B
In a common collector circuit, the output and input are…
In phase
What part of a transistor has the biggest doped region?
The collector
In a transistor symbol, what is the arrow showing?
The flow of conventional current
