More about light (490)

1-10-1989 | INTERMEDIATE PROJECT A series of projects for the not-so-experienced constructor. Although each article will describe in detail the operatio...

1-07-1989 | 003 CAR ELECTRONICS A defect car light is at best a nuisance and at worst a danger. Fortunately, most new cars are equipped with suitable mo...

1-07-1989 | 023 CAR HEADLIGHT CONTROL It is an annoying fact that you normally only realize that you have left your car headlights on when you want to r...

1-07-1989 | 037 HEAD / TAIL LIGHTS FOR MODEL RAILWAY a DI D5 (•o The price of a model railway locomotive is directly proportion- al to its facilities...

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 | 0 It"s dark and it"s raining cats and dogs. You rush to your car, open the door and quickly close it behind you again. Then you sit there fu...

1-07-1988 | EE JULY/AUGUST 1988 02 FLASHING LIGHT This is a rather unusual application of IC1 the Type 317 voltage regulator. With only a handful of ext...

1-07-1988 | It is never advisable to leave a car"s headlights on for long periods when the engine is not running. Yet, especially during the winter mont...

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...

1-01-1988 | 64 EE January 1988 2 03 ■I • AA119 r- -0" T L _rf *R7 bias setA 4 3 2 8 _J 01 72 R11 BC54713 100n 0 IN LO 26 V- OSC1 OSC2 OSC3 C REF REF...