May it be a surprising title – Loafer’s LED Wick! Let it be, the article is nothing but the design idea of a little LED light based on Joule-Thief concept. It’s true that by a bit of googling you can see an avalanche of the said Joule-Thief circuits, hope that fits but a moment here… [Read More]
Mini Solar Garden/Street Light
Here’s another do it yourself project of an automatic mini solar garden/street light. This design belongs to the ‘renewable energy’ category, and is wired around a handful of inexpensive electronic parts. This nifty light circuit has two key components: a solar panel with a peak output voltage of about 6 V, and a Li-Ion battery… [Read More]
Little Rescue Light
During an unexpected blackout in particular, a simple light source can be a handy aid. With only two transistors, one photo resistor, and a few other components you can build an automatic emergency light. Here’s the circuit of my recently built, battery operated, little rescue light that lights up automatically in dark times! Circuit Diagram… [Read More]
White LED Bulb AC230V
Presented here is a simple yet useful AC230V White LED light bulb with an isolated digital interface to control its on/off switching actions through a microcontroller or an external electronic circuitry. The design is based on inexpensive and popular discrete components widely available from almost all electronics component vendors. Shown below is the prefatory schematic… [Read More]
Automatic LED Night Light
Inspired by a Chinese design, recently I built a small automatic LED night light with the help of a few generally available inexpensive components. Shown below is the base schematic of that automatic White LED night light runs on AC230V. Needless to say, an ambient light sensor is used in the design for day &… [Read More]