| The design of the charger is similar to that of many commercially available chargers. The charger consists of a mains adaptor, two resis...
| The design of the charger is similar to that of many commercially available chargers. The charger consists of a mains adaptor, two resis...
| The circuit of the running light comprises two integrated circuits (ICs), a resistor, a capacitor and seven light-emitting diodes (LEDs)...
| In this article we answer the questions of our readers.
| This inexpensive VHF preamplifier uses the BF324 1092 style pnp transistor in a grounded-base configuration. The circuit may be used as a...
| Standard zener diodes are often too slow for application in signal-limiting circuits. If a fast zener is not available, the circuit in th...
| It may happen that a video recording is a little too dark so that certain nuances disappear and the picture is no longer clear. The expan...
| The p-i-n (or PIN) diode is a semiconductor diode that contains a region of almost intrinsic (i-type) semiconductor between the p-typ...
| The advantage of a touch witch over a traditional, mechanical, witch is that its operation is not degraded by wear and tear.
| The monitor is a handy aid in cam and is particularlv suitable for radio amateurs who power their equipment from a car battery.
| In certain applications it may be desirable, in order to limit unnecessary power losses, to have the use of a diode with a forward voltag...