| A small PCB the size of a TO-220 case containing a PWM voltage regulator to replace the classic 7805 by a more efficient regulator and with...
| A small PCB the size of a TO-220 case containing a PWM voltage regulator to replace the classic 7805 by a more efficient regulator and with...
| Although the burning of natural gas emits far less carbon dioxide than coal, a new study concludes that a greater reliance on natural gas wo...
| Along with a video switch, the circuit includes a video amplifier that has been used with good results in many other Elektor projects, which...
| The circuit idea given here serves to switch off lights and other appliances centrally with a minimum of fuss.
| Although ready-made twilight switches for exterior lights are available in every home improvement shop, any self-respecting electronics enth...
| Thumbwheel switches are remarkably expensive and always playing hard to get. Here’s a cheaper, digital equivalent with the ability to rememb...
| Many appliances these days are switched on and off with the simple push of a 'soft' on/off button. In the 'off' position the...
| The 40106 is a versatile CMOS IC containing six Schmitt trigger inverters. It can be used to implement a set of alternating-action switches...
| The object of this circuit is turn the domestic lighting on and off in complete safety in a room with very high humidity. A detector, flush-...
| This power supply is based on an integrated switching regulator to keep the component count within reasonable limits. The functional units o...