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Technology Enhancement Programme
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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.
Sound
From the Technology Enhancement Programme (TEP), these circuits allow students to build a range of devices. Each circuit has a full circuit diagram, component list and explanation of how the circuit works. In this section, the circuits cover a range of sound and audio devices.
Two-tone siren
This circuit produces a sound similar to the sound produced by an American police car.
Noise switch
When sound impinges, e.g. snapping of fingers on the speaker, an LED will light and remain in that condition. i.e. the circuit is latched.
Electronic organ
An organ that can produce eight notes to play a simple tune.
Music IC
Used primarily in music boxes, toys and musical cards, when activated this circuit will play a popular ditty.
Jewellery box sound switch
When the lid of a jewellery box is raised, a popular ditty will be played.
Morse code trainer
This circuit can be used as a Morse code trainer. When a key or switch is depressed, the speaker emits a note at the same frequency as the dots and dashes transmitted in Morse code operation.
Metronome
This circuit produces a sharp clicking sound at regular intervals. This is useful to keep time in music.
Two-way intercom
This circuit provides a means for two people (say in different rooms) to communicate with each other.
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Downloads
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Two-tone siren 28.93 KB
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Noise switch 28.14 KB
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Electronic organ 25.9 KB
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Music IC 12.58 KB
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Jewellery box sound switch 16.17 KB
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Morse code trainer 28.34 KB
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Metronome 22.09 KB
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Two-way intercom 23.94 KB
Show downloads
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Two-tone siren 28.93 KB -
Noise switch 28.14 KB
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Electronic organ 25.9 KB
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Music IC 12.58 KB
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Jewellery box sound switch 16.17 KB
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Morse code trainer 28.34 KB
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Metronome 22.09 KB
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Two-way intercom 23.94 KB
Download all files as a .zip148.39 KB
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