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DIY wireless power transfer: Build a simple coil circuit to light up LEDs!

Discover how to build a simple wireless power transfer system at home using readily available components like enameled copper wire, an LED, a 2N2222A transistor, and a 9V battery. This step-by-step ...
Nature

The life and times of the LED — a 100-year history

Many people believe that the LED was discovered by US researchers working in the 1960s. In fact, Henry Round at Marconi Labs noted the emission of light from a semiconductor diode 100 years ago and, ...
IEEE

A design of current balancing circuit for parallel connected LED strings using balancing transformers

Abstract: This paper presents a design method of current-balancing circuits for parallel connected LED strings. Current LED error strings caused by characteristic ...
IEEE

A Single-Stage LED Driver Based on Interleaved Buck–Boost Circuit and LLC Resonant Converter

Abstract: A single-stage LED driver based on an interleaved buck-boost circuit and an LLC resonant converter is proposed. The buck-boost circuit and the LLC resonant converter are integrated by ...
Auto Service World

Snap-on Data Bus Fault Finder

Today’s vehicles have 15 to 20 computers talking to each other on shared circuits that can ultimately fail. The new Data Bus Fault Finder (EEFF500) from Snap-on is the essential tool to diagnose Data ...