| This low-cost circuit enables turning room lights on and off simply by touching a round metal sensor. The light is turned on by briefly touc...
| This low-cost circuit enables turning room lights on and off simply by touching a round metal sensor. The light is turned on by briefly touc...
| 03 PRINTER SHARING BOX This simple circuit makes it possible to connect two computers to a single printer. Toggle switch Sz selects the rel-...
| OMA-2500 is a 1 kW time standard trans- mitter on 2500 kHz. The station is located in Liblice, Czechoslovakia, and is operated by the Astron...
| PROGRAMMABLE SWITCHING SEQUENCE The proposed control circuit is shown in the diagram as containing two relays, but this number may be increa...
| A burst generator is indispensable for testing the dynamic response of loudspeakers, and, in some cases, AF amplifiers. The fact that a numb...
| EE JULY/AUGUST 1988 The Commodore Amiga is claimed to be a computer with plenty of facilities for extension circuits. The model 500, for ins...
| An increasing number of electronic components, and in particular inte- grated circuits, is now only available as surface-mount devices (SMDs...
| 04 This two-key wiper delay circuit is remarkable for its simplicity and ease of use. The wipe is started by pressing the SET switch, which...
| 0 4 WIRELESS HEADPHONES (TRANSMITTER) A circuit for the transmission, with good quality, of the sound output of a TV re- ceiver over a coupl...
| To arrive at a suitable headphone re- ceiver that meets the requirements of being light, battery-powered, and offer- ing good-quality reprod...