Electronics

Introduction

Candidates will be expected to learn the basic differences between general electricity and electronics with emphasis on the advantages of electronics and the lead it has taken in modern technology.

Candidates will also be expected to identify and employ in various simple circuits common circuit elements such as resisitors, diodes, capacitors, switches, loudspeakers, headphones, transformers, audio transducers, transistors, telephone receivers, and such other elementary communication systems.

Salting a Transistor

Simple experiments to understand the basic principles of a transistor. Students will study the two types of transistor (the pnp and npn).

Students will observe demonstration and will be able to describe the arrangeents of component parts and operation of:

(a) Power circuits.

(b) Audio amplifiers.

(c) Transducers.

(d) Electronic systems, e.g. record player, radio receiver, signal generator, intercom systems, photo electronic switching systems.

Compound Projects

(a) Electronic Buzzer

Multivibrator consisting of: 2 transistors, 4 resistors, 3 capacitors, 1 small 8-ohm speaker.

(b) Photoelectric Cell Alarm

(c) Electronic Car Ignition Systems

(d) Stabilized Power Supply

(e) Burglar Alarm

(f) Electronic Bell

Students will be introduced to the integrated circuits (I.C.) to bring out their fast overtaking (replacement) of basic electronic circuits, e.g. power amplifiers, radio circuits. They will ten be shown their equivalent in transistor circuits. They are also expected to:

(a) Understand I.C.

(b) Identify components.

(c) Carry out testing.

(d) Practice replacement.

• The candidates will not be examined on electronic integrated circuit (I.C.)