THD of an audio system can be easily measured, but because the ultimate output of an audio system is a sound for humans to hear, human perception plays a role in…
THD of an audio system can be easily measured, but because the ultimate output of an audio system is a sound for humans to hear, human perception plays a role in determining what to do about THD.
Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak…
Nowhere to hide presents this holiday season? No problem! This alarm will sound anytime a loved one tries to get a sneak peek at his or her surprise.
In part 2 of the LED saber project, we'll assemble the power and audio systems.
In part 2 of the LED saber project, we'll assemble the power and audio systems.
This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have…
This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have a negative voltage supply.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
In this article, we will look at two variations on the basic BJT current-buffering circuit.
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve…
Use negative feedback to increase your amplifier’s signal-to-noise ratio, reduce its nonlinear distortion, and improve its input- and output-impedance characteristics.
This analog design allows your LEDs to respond to your music. Just plug your music source into this which sends a channel…
This analog design allows your LEDs to respond to your music. Just plug your music source into this which sends a channel to your sound system and some LEDs.
Use a laser and a photo resistor to build a laser based point-to-point communication system. The best part? It's under $10.
Use a laser and a photo resistor to build a laser based point-to-point communication system. The best part? It's under $10.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
Part 2 in the “How to Make an EFM8-Based Sound Synthesizer” series.
You and your friends are planning the greatest party your hometown has ever seen. Just one problem: you don't have a…
You and your friends are planning the greatest party your hometown has ever seen. Just one problem: you don't have a karaoke system. What's a great party with no karaoke? We're about to fix that. All you need are a few potentiometers and an op-amp.
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