SHS2 Applied Technology · Semester 2 Week 16: Electronic Components and Circuits

Lesson notes

Learning Objectives

Indicator: 2.5.2.LI.5 - Illustrate the construction of transistors

By the end of the lesson, learners can:

Identify the three terminals of a bipolar junction transistor (BJT) and label them on a diagram.
Describe the construction of a BJT as two back-to-back p-n junctions with three doped semiconductor regions.
Distinguish between the construction of BJTs (NPN and PNP), Field Effect Transistors (FETs), and Unijunction Transistors (UJTs) in terms of their layers and terminals.
Draw and label simplified construction diagrams of NPN, PNP, FET, and UJT transistors.
Match each transistor type to its common application, such as BJT in power amplifiers and security circuits.

The lesson builds directly on learners’ existing knowledge of resistors, capacitors, inductors, and cells from Weeks 14 to 16, and prepares them for the principles of operation (2.5.2.LI.6) and circuit design (2.5.2.LI.7) scheduled for Week 17.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Electrical and Electronic Technology (Strand 5)
Sub-strand: Electronic Components and Circuits (5.2)
Content standard: 2.5.2.CS.1 - 2.5.2.CS.1 Demonstrate understanding of Transistors as electronic devices and apply them in designing electronic circuits. 2.5.2.LO.1 Demonstrate knowledge and understanding of electronic components and use them to design and construct electronic circuits.
Indicator: 2.5.2.LI.5 - Illustrate the construction of transistors
Suggested placement: Semester 2, Week 16 (Week 36 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 122

Exemplars (from the NaCCA curriculum)

Experiential Learning: Using videos (YouTube): Demonstrate to learners how the transistor is constructed.
Collaborative Learning:
- Engage learners to work in mixed gender groups to use the video to:
- Describe the construction of the various transistors e.g. BJT (Bipolar junction transistor), FET (Field effect transistor), and Uni junction transistors
- Explain the operation of each transistor and state their applications e.g. the BJT is used to build circuits such as the power amplifiers and security circuits.

Assessment (2.5.2.AS.5). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding; Level 3 Strategic reasoning.

Teaching and Learning Materials:
- Computers installed with multism software
- Resistors, Capacitors, Inductors
- multimeters
- the use of the internet