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...
Teach Engineering
Pointing at Maximum Power for PV
Following detailed directions, teams collect the voltage and current outputs of a photovoltaic cell by adjusting the resistance. Using the collected data, they determine the highest power output. Implications for weather and a large...
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...
Curated OER
Circuit Lab
Pupils explore the properties of electricity. This lab shows students the need for a circuit in order to have a flow of electricity. It demonstrates Ohm's law, which relates voltage, current, and resistance.
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...
Teach Engineering
Introduction to Circuits and Ohm's Law
Take a very basic understanding of circuits and develop a strong understanding of the parts and function of a circuit. This activity is developed to be an independent exploration of circuits from the basics to series and parallel models....
Curated OER
Design Project: Audio Media-based Signal Generator
In this physics instructional activity, students are given a schematic diagram to construct an amplifier circuit. They complete 4 short answer questions about the circuit they made.
Curated OER
Digital Logic Signals
For this electronics worksheet, students interpret schematic diagrams and analyze circuit components to answer 9 short answer and problem solving questions.
Curated OER
Design Project: LED Stroboscope
In this physics worksheet, students design and build an electrical circuit using LED as a light source. They complete 2 short answer questions about their design.
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.