All items tagged with Switch and light (42)

1-06-1991 | LIGHT SWITCH WITH TV REMOTE CONTROL Why not use the infra-red remote control, that magic little box supplied with every TV set these days, f...

1-09-1990 | This circuit automatically switches on the headlights of a ear after the engine is started. In countries like Sweden and Canada, ear driver...

1-07-1989 | 042 This inexpensive unit switches the light on at dusk and off again at dawn. The circuit has separate time bases for the on and off delays...

1-07-1988 | 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...

1-07-1986 | EE July/August 1986 34 We all sometimes wish that some of the switches around the home were just a little easier to locate and operate, nota...

1-07-1986 | Just like the associated hand-held transmitter (see previous article), the receiver is simple to construct. As can be seen from the circuit...

1-07-1986 | by H Huynen light-sensitive switch A = on B = auto C = oft R1 R2 R6 T1 U C4 DI TIL81 BP103 1N4148 O 4704 e 25V B80C1500 T3 oA B C EZE T2 BC5...

1-01-1986 | INFRA-RED LIGHT SWITCH Anyone who has ever fried to switch the light on when entering a dark room with both hands full will appreciate this...

1-07-1985 | The special feature of this flashing light is the optical switch, which auto- matically switches the light on when it gets dark, and switche...

1-03-1985 | darkness-sensitive light switch elektor march 1985 As can be read almost daily in any newspaper, the number of burglaries in private residen...