Lesson Notes By Weeks and Term v4 - SHS 1
ANALOGUE ELECTRONICS
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ANALOGUE ELECTRONICS
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Subject: Physics
Class: SHS 1
Term: 2nd Term
Week: 19
Grade code: 1.3.3.LI.3
Strand code: 3
Sub-strand code: 3
Content standard code: 1.3.3.CS.2
Indicator code: 1.3.3.LI.3
Theme: ELECTRIC FIELD, MAGNETIC FIELD AND ELECTRONICS
Subtheme: ANALOGUE ELECTRONICS
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This lesson introduces the concept of transducers, which are essential components in almost every electronic device we use daily. From the phone in our pocket that turns our voice into a signal, to the speakers at morning assembly that turn a signal back into sound, transducers are the bridge between the physical world and the world of electricity. Understanding how they work is fundamental to understanding electronics. In Ghana, we interact with transducers constantly—in our churches and mosques, in our cars and "tro-tros," and in our homes when we watch TV.
Core Concept: What is a Transducer?
A transducer is any device that converts one form of energy into another. In electronics, we are most often interested in devices that convert physical energy (like sound, light, or motion) into an electrical signal, or convert an electrical signal back into a physical form of energy. An input transducer (or sensor) detects a physical quantity and converts it into an electrical signal. Example: A microphone. An output transducer (or actuator) takes an electrical signal and converts it into another form of energy. Example: A loudspeaker.
Let's explore the specific transducers mentioned in the curriculum.
The Microphone