| Many electronic projects call for a timebase generator, accurate to a second or so. One way of producing this is with a microcontroller, qua...
More about Circuit (708)
| Here’s a rather special voltmeter that will let you measure the AC grid voltage and also see very accurately how it fluctuates around its no...
| Chip manufacturers are always coming up with ever more sophisticated constant current driver chips for LEDs. We have included this design fo...
| This design came about when the author wanted better control of his 12 V solar-charged garden lighting installation. It is however a versati...
| Developing a lighting control unit recently, the author found that available analogue or mechanical timers were not sufficiently accurate or...
| Many appliances these days are switched on and off with the simple push of a 'soft' on/off button. In the 'off' position the...
| There are several techniques for providing lab-grade contacts from one track side to the other on DIY printed circuit boards. They range fro...
| There are many different types of stepper motor. Because there is no documentation available for stepper motors that have been removed from...
| A zapper is a device that is often used in alternative medicine. This device is a so-called electronic bioresonance pulse generator, which g...
| The 40106 is a versatile CMOS IC containing six Schmitt trigger inverters. It can be used to implement a set of alternating-action switches...