| To keep the converter simple, it contains no preset controls, which means that the level of the output voltage is dependent to some degree...
All items tagged with Time and Electronics (309)
| The indicator shows eight wind directions by means of LEDs. The sensors are reed contacts powered by a permanent magnet. The mechanical co...
| The monttor is intended for use in relatively small spaces (like living rooms). The sensor is a readily available LM335 from National Semi...
| RC-5 is the Philips /Sony standard for infra-red [IR] remote control of audio /video equipment. The circuit and the listing given enable...
| Although good and inexpensive integrated analogue-to-digital (A-D) converters are now readily available, it may be instructive to build o...
| The indicator shows when a fish has taken the bait. Until that happy moment (at least for the angler), the bite sensor is open, so that b...
| It is sometimes necessary to make a telephone conversation audible to more than one person at either end or to make a tape recording of i...
| The time-determining element in the present circuit is capacitor C1, which is charged via a current source based on T1. The voltage acros...
| A solid-state bell-push is far more robust than the usual mechanical type. The touch contact may be made from an audio socket, which has...
| Voltage doublers are frequently encountered in electronic circuits. The present one is a variation that is of interest since most digital...