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Capacitors and Resistors in Alternating Current
In this model students will see that increasing the frequency of an a.c. supply has no effect on the current in a circui… full details...
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Using Frequency to Find Period
In this model a signal generator produces a low frequency signal to power a bulb. A graph of the voltage is used to sho… full details...
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Frequency Graphs
This video shows how to plot frequency graphs from your data in Yenka Statistics. full details...
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Digital Timing Circuits - 555 Astable
This exercise introduces the 555 astable timer chip. Students learn the meaning of the word astable, and see that the o… full details...
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Wave Shapes
This activity introduces the main features of wave shapes. The simulation uses circuits with loudspeakers to produce so… full details...
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Using Period to Find Frequency
This model looks at three balls bouncing with different periods. This is used to illustrate how frequency can be calcul… full details...
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High-Pass Filter
This circuit models a simple filter, using a capacitor, which blocks low frequency signals but allows high frequency one… full details...
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Pure Colour
This demonstration uses a prism, mirrors, and single slits with adjustable position, to show how refraction can be used … full details...
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Frequency and Period
Animations of a shuttle bus, a motor and waves, are used to introduce the concepts of wave frequency and period. Studen… full details...
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AM Radio
This activity looks at AM radio signals and explains the terms modulate, amplitude modulation, frequency modulation, car… full details...