Khan Academy: 2757 products
Khan Academy is an organization on a mission. We're a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
All of the site's resources are available to anyone. It doesn't matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get …
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Electrical engineering: Demo: coin detector
demonstration of a simple coin detector Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We al…
VideoFree1 minute
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Electrical engineering: First term in a Fourier series
The first term in a Fourier series is the average value (DC value) of the function being approximated. Electrical engineering Learn about e…
VideoFree7 minutes
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Electrical engineering: What is an operational amplifier?
The "operational amplifier" has two differential inputs and very high gain. Willy describes the symbol and properties of an op-amp. Op-amps…
VideoFree12 minutes
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Electrical engineering: Attach Spout's antennae
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree2 minutes
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Electrical engineering: Complex exponential magnitude
A closer look at the complex exponential term in Euler's Formula. We see that it represents a complex number, a distance of 1 from the orig…
VideoFree6 minutes
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Electrical engineering: Diode graphical solution
We solve a diode circuit graphically by plotting a diode i-v curve and resistor to find the intersection. Graphical solution methods are a …
VideoFree8 minutes
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Electrical engineering: Euler's cosine wave
A cosine wave emerges from Euler's Formula. Music, no narration. Animated with d3.js. Electrical engineering Learn about electricity, circu…
VideoFree3 minutes
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Electrical engineering: Finding Fourier coefficients for square wave
Finding Fourier coefficients for a square wave Electrical engineering Learn about electricity, circuit theory, and introductory electronics…
VideoFree11 minutes
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Electrical engineering: Give Spout some grippy feet
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree1 minute
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Electrical engineering: What is inside a DVD player? (1 of 5)
In this video we explore the housing and functions of a DVD player. Electrical engineering Learn about electricity, circuit theory, and int…
VideoFree4 minutes
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Electrical engineering: Add Spout's tail
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree2 minutes
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Electrical engineering: Parallel resistors (part 2)
Multiple resistors in parallel can be combined into a single equivalent resistor Electrical engineering Learn about electricity, circuit th…
VideoFree4 minutes
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Electrical engineering: Wire the SPDT switches
Electrical engineering Learn about electricity, circuit theory, and introductory electronics. We also have sections that let you get down a…
VideoFree6 minutes
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Electrical engineering: Switch block
Control robot behavior based on some condition Electrical engineering Learn about electricity, circuit theory, and introductory electronics…
VideoFree4 minutes
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Electrical engineering: ELI the ICE man
Remember the relationship between current and voltage in an inductor and capacitor with the help of ELI the ICE man. Electrical engineering…
VideoFree10 minutes