| The signal-controlled switch actuates or deactuates a.f. equipment, including preamplifiers, power amplifiers, and filters. It is partic...
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| In many countries, there is a legal requirement for can and motorcycles to have lights on whenever the vehicle is moving. In even more c...
| This circuit is based on the well known LM350T voltage regulator from National Semiconductor, and largely follow the standard application...
| There are quite a few applications of an audio power amplifier in which power and hi-fi characteristics are of secondary importance. If, for...
| This little circuit may help to prevent costly disasters caused by overheating of semiconduction fined on heat sinks, to mention but one...
| Many measuring instruments are provided with a 7-segment display, LED har or discrete LEDs, which are controlled directly by an analogue...
| The watchdog is intended to monitor a microprocessor and determine whether this functions correctly or not. It and its software are suit...
| Believe it or not, but it's fashionable ('cool') these days to listen to medium-wave radio stations. Ferranti's ZN416 integrated circuit con...
| A standard CMOS oscillator IC does not work with a watch crystal (32.768 kHz). At best, it starts to oscillate when the supply voltage is sw...
| The low-cost circuit charges two nickel-cadmium cells from the mains to provide a stand-by power supply for a two-lamp emergency light which...