| Sometimes you wish you had an electronic magnifying glass to do a really accurate voltage measurement, or watch voltage fluctuations withi...
| Sometimes you wish you had an electronic magnifying glass to do a really accurate voltage measurement, or watch voltage fluctuations withi...
| There are frequent occasions in which a circuit needs a low-current supply at a voltage appreciably higher than the 12 V provided by a s...
| This circuit switches two electrical loads on and off under the control of an acoustic signal. The remote control operates reliably up to...
| There are often occasions when a higher direct voltage is required than an available battery can provide. In many such cases, the circuit...
| A circuit is described that, controlled by a computer, generates perfect sine wave signals.
| The circuit described here mimics the behaviour of a firefly, but only if you build more than one. Although it may be a bit bold to spea...
| Although it has no detector or alarm actuation device of any kind, the present circuit may still function as a deterrent against car thi...
| This running light circuit drives a matrix consisting of 8 up to 32 LEDs, and is primarily intended for playful and decorative application...
| Transferring a PCB layout from paper on to a circuit board is either costly (photographie method) or cumbersome (using sprays and the like...
| Many car battery chargers costing not more than £12- £15 are pretty spartan devices. Car owners should beware of using such chargers whi...