Bonneville
DC to AC to DC Efficiency
The power to learn about AC and DC power lies within everyone. The fifth of seven installments in the Off the Grid unit continues the investigation of the efficiency of a USB charger. Individuals use an inverter that converts DC power to...
Curated OER
Solar Kit Lesson #13 Solarize a Toy
Students work in teams they select a low-power toy, game, or electrical deive to "solarize," or convert to solar power. They determine the operating voltage of their chosen device and design a solar array to provide this level of...
Curated OER
Solar Kit Lesson #13 - Solarize a Toy
Physical science or technology classes will be invigorated by this challenge: to convert a toy, game, or other device to run on solar power. In doing so, they will design the appropriate solar arrays. This is an A+ lesson, complete with...
Curated OER
Electronic Circuit Design
Young scholars design circuits to power 3-9 volt devices such as CD players or flashlights. After measuring the voltage and current requirements for the item, they design a loaded voltage-divided circuit to power it. Students work in...
IOP Institute of Physics
Physics in Concert
What do physicists and musicians have in common? A lot more than you might think. After first viewing a slide show presentation and completing a series of skills practice worksheets on the physics of light, sound, and electricity, young...
DiscoverE
First You See It, Then You Hear It
Light and sound go hand in hand. Pupils set up a system that will emit sound when a laser is directed at a photodiode. Various objects, such as a comb and talcum powder, allow for modulation of the laser beam. Individuals also...
Curated OER
Four-Channel Audio Mixer
In this electronics worksheet, students design and build a four-channel audio mixer. They complete 2 short answer questions about it.
Curated OER
Design Project: Power Inverter
In this physics worksheet, students design and build a power inverter given a schematic diagram. They answer 3 short answer questions about the circuit they created.