ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 2
combination of the current in both of these loops (IB + IC)
results in total transistor current (IE). The most important
thing to remember about the two different types of transistors
is that the emitterbase voltage of the PNP transistor has the
same controlling effect on collector current as that of the NPN
transistor. In simple terms, increasing the forward bias
voltage of a transistor reduces the emitterbase junction
barrier. This action allows more carriers to reach the
collector causing an increase in current flow from the emitter
to the collector and through the external circuit. Conversely,
a decrease in the forwardbias voltage reduces collector current.
4. Conclusion
In this task, we covered the basic fundamentals of semiconductor
devices, including NPN and PNP transistors. In the next task,
we will cover the setup, operation, and use of the AN/USM281C
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