Table. 1.

Structure of transistors described in high school physics textbooks. ◯: satisfactory contents, ×: unsatisfactory contents, ‘ - ’: missing contents.

Category Contents A B C D E
Description Explanation of a pn junction diode × × × × ×
Type of transistors used to explain how transistors operate BJT BJT BJT BJT BJT
Type of transistors used to explain how BJTs operate npn pnp npn both npn
When only one type of BJTs is described, additional explanation that pnp and npn BJTs are similar in principle but have the opposite current directions and voltage polarities × × - ×
New Phys.: Sae Mulli 2022;72:409~418 https://doi.org/10.3938/NPSM.72.409
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