Page 18 - Electronics Starter Kit_EN
P. 18
There are three operation modes for the transistor:
1. Cut-Off
In the Cut-Off mode IB = 0 , IC = 0.
Transistor does not connect anything.
2. Sauration
In the Saturation mode IB = High Value , IC = High as much as the source can give.
The transistor connects the higher current for the load.
3. Active Region
In the Active Region mode IB = Medium Value , IC = HFE . IB.
HFE = β = Gain of the Transistor.
If we use the transistor in Cut-Off and Saturation modes, it will be as a switch ON / OFF.
If we use the transistor in Active Region mode, it will be as an amplifier.
In this guide most of the circuits are going to be in the first two modes.
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