A blast from the Elektor archives: this 1998 battery tester uses a simple LED display to reveal a battery’s true condition under load — even below 1 V.

These light up paper circuit cards were much easier to make than I expected and only need a few inexpensive materials.

This design idea (Figure 1) shows how easily “new flesh can be added to the old bones” and how some new functions can be added to the simple LED display that was published earlier. Figure 1 Upgraded ...

Recycling is the act of processing used or abandoned materials to create new products. Here’s a simple DIY electronics recycling project — Layman’s Christmas Window Lights — that is nothing but a ...

Guest columnist Faraz Hasan, marketing and business development manager at Tyco Electronics Circuit Protection Products says that LEDs can require overcurrent protection despite built-in safety ...