| Time is money, and the shorter one has to wait tor an EPROM to be erased, the better. The circuit described here will save you time because...
| Time is money, and the shorter one has to wait tor an EPROM to be erased, the better. The circuit described here will save you time because...
| In radio frequency electronics a mixer is a non-linear circuit or device that permits frequency conversion by the process of heterodyning....
| A flash tube control circuit is described wh ich is suitable for playful as weil as serious applications. The unit has a flash frequency o...
| Although ready-made printed circuit boards are available for most projects described in this magazine, there are cases where a 'real' peB...
| The switching unit described here is capable of controlling up to seven mains-powered loads with the aid of commands received via telephon...
| Resonant 'tank' circuits consist of combinations of inductance (L) and capacitance (C) elements configured in such a manner that a single f...
| When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...
| Many of the less expensive shortwave receivers have no squelch circuit and continue to emanate noise when no usable signal is coming in....
| Modern integrated voltage regulators are protected against short circuits. but do not give an indication when a short circuit occurs. In...
| The transmitters is a crystal-controlled, battery-powered, one-chip narrow-band FM (NB FM) model for operation in the 27-MHz band, primar...