More about light (490)

1-07-1985 | elektor July august 1985 it+044.1 11 brake lights monitor R Kambach The circuit described below monitors your car"s brake lights, and indica...

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...

1-07-1985 | 1110011111041111 A novel use of solar cells makes pos- itioning your car in the garage rather easier than old tyres, a mirror, or a chalk ma...

1-04-1985 | light-powered radio... elektor april 1985 light- powered radio 4-24 • • • ...saves on batteries All portable receivers, large and smal...

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...

1-09-1984 | flash meter elektor september 1984 The flash units used by most photographers today are carefully designed to provide the correct amount of...

1-07-1984 | . . for disco lights It is interesting to be able to vary the run-off speed of the disco lights featured in our February 1984 issue. Not man...

1-07-1984 | helps a computer to get to the point A light pen is a tool that allows the coordinates of a point on the screen to be entered into a compute...

1-07-1984 | gives double protection Warning lights fulfill an undeniably important role in many technical in- stallations. However, even in the best of...

1-07-1984 | to help your guests This circuit should put an end to your guests fumbling for the light switch in the cloakroom. It ensures automatically t...