Question T6B12
From subelement T6 - T6B
What are the names of the electrodes of a bipolar junction transistor?
Why is this correct?
A bipolar junction transistor (BJT) has three electrodes named emitter, base, and collector. The base is the control electrode that regulates current flow between the emitter and collector. Options A, C, and D use generic electronic terms that don't specifically identify BJT electrodes. These are the standard names used in all transistor datasheets and circuit diagrams.
Memory tip
Remember the BJT electrode pattern: emitter sends out current, base controls it, collector gathers it. This naming convention is universal across all bipolar transistors, whether NPN or PNP types. The names reflect the actual function of each electrode in the transistor's operation.
Learn more
In practical amateur radio circuits, you'll see these electrode names on schematic symbols and component datasheets. The emitter typically connects to ground or power supply through a resistor, the base receives the input signal through a coupling network, and the collector connects to the load. Understanding these connections helps when troubleshooting amplifier stages in transceivers, where BJTs commonly serve as RF amplifiers and mixers.
Think about it
Why do you think transistor electrodes have functional names like 'emitter' and 'collector' rather than simply being labeled as terminals 1, 2, and 3?