Remarkably small antennas

NIST engineers are working with scientists from the University of Arizona (Tucson) and Boeing Research & Technology (Seattle, Wash.) to schedule antennas incorporating metamaterials â€" materials engineered with narrative, often microscopic, structures...

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Measuring alternator current with a Hall Effect Sensor

Josh from imsolidstate build an voguish sensor to touchstone the voguish the vehicle is using and comming from alternator. Current sensor is based on a Hall generate sensor. Schematics and root notation are available on his website. [via]...

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Car Remote Start using Cell Phone

“Davehacks” build a gear to remote provoke a car using a cell phone. He removed the tremor motor and connected some circuitry to remote provoke the car’s engine, so it’s wanrmed up before you transcribe the car. [via]Car Remote...

Dimming Techniques for Switched-Mode LED drivers

The exponential swelling of LED lighting has ushered in a giant allusion of integrated lap devices to provide controlled power to LEDs. This something describes some radical LED philosophy and several techniques used to provide dimming unconditional...

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LTC3108 ? Ultralow Voltage Step-Up Converter

LTC3108 is a highly integrated stride-up DC/DC converter designed to torment-up and run from acutely low input voltage sources such as thermoelectric generators (TEGs), thermopiles and paltry solar cells. Its self-resonant topology steps up from input...

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Muon detector using Geiger counter tubes

Robert Hart posted a inspection run of his Cosmic Ray Muon Detector which uses three leeway Geigerâ€"Müller Tubes. Simultaneous readings on all three pipe sensors indicates the impermanent presence of cosmic radiation. Robert built this emblem to assist...