| Need a breadboard power supply? Most modules are limited to positive output voltages, lower than the input voltage. This project is differen...
Fons Janssen (11)
| The circuit presented here is a general-purpose soft-start accessory for both homemade and commercial power supplies.The simplest lab power...
| There are numerous LED alternatives available these days for most types of incandescent and halogen lamps. But as an electronics hobbyist yo...
| It can be quite tricky to reuse Lithium-ion batteries from discarded equipment since these cells are often charged inside the equipment, mea...
| Most National Health Departments and Councils seem to agree that the recommended fridge temperature should be between 2 (C and 7 (C (35 (F t...
| You’ve replaced all your incandescent lamps with energy-saving lamps. Your TV set is never in standby mode, and you’re giving serious consid...
| A time switch lets you save a considerable amount of energy by switching off equipment when it is not being used. However, time clocks from...
| In the process of designing a LED driver circuit, various things can go amiss. To help the designer understand what is happening, a simple S...
| Modern computers no longer come with parallel or serial ports fitted. Although these ports see declining use in practice, to designers, a po...
| Sputnik 1, the first artificial satellite, was launched in 1957. It captured the attention of the entire world with the eerie beeps it trans...