SHS2 Applied Technology · Semester 2 Week 17: Electronic Components and Circuits

Lesson notes

Learning Objectives

Indicator: 2.5.2.LI.6 - Illustrate the principles of operation of the various transistors.

By the end of the lesson, learners can:

Explain how the NPN and PNP Bipolar Junction Transistors (BJTs) operate, including the roles of the emitter, base, and collector terminals.
Correctly connect an NPN and a PNP transistor in a simple circuit, identifying the proper biasing for each type.
Describe the operation of the Junction Field Effect Transistor (J-FET) and the Metal Oxide Semiconductor Field Effect Transistor (MOSFET), highlighting the role of the gate, drain, and source terminals.
Differentiate between the operation of the J-FET and the MOSFET, stating at least two key differences in their construction and control mechanism.
Describe how the Uni-junction Transistor (UJT) operates, including its two-base construction and its use in triggering circuits.

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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.6 - Illustrate the principles of operation of the various transistors.
Suggested placement: Semester 2, Week 17 (Week 37 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. 123

Exemplars (from the NaCCA curriculum)

Task learners to: Explain the operation of the BJT transistors (PNP and NPN) and indicate the proper connection of each in a circuit. Research and Collaboration
- Organise the learners into mixed ability or gender inclusive groups, task them to do the following activities and submit report.
- Discuss the operations of the Field Effect Transistor (FET) e.g. Junction Field Effect Transistor (J- FET) and Metal Oxide Field Effect Transistor (MOSFET).
- Differentiate between the operation of the J-FET and the MOSFET
- Describe how the Uni-junction Transistor operates.

Assessment (2.5.2.AS.6). The document marks no depth-of-knowledge level for this indicator.

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