More about light (490)

1-07-1979 | Flashing lights are very much an integral part of the disco scene nowadays. Usually the lights are controlled or modulated in some way by th...

1-07-1979 | This simple circuit offers model railway enthusiasts a cheap alternative to the fairly expensive block section controllers which are availab...

1-07-1979 | The following simple circuit should prove a useful safety aid to motor-cyclists. In contrast to car drivers, motorcyclists generally only ha...

1-07-1979 | When flying radio controlled model aeroplanes there is always the chance that a fault will occur in either the transmitter or the receiver,...

1-07-1979 | This circuit is intended to display any desired character on an oscillo-scope screen. The character is pro-duced by erasing certain dots in...

1-04-1979 | There are many different designs for alarm circuits which remind the motor-ist to switch off his lights before leaving the car. The advantag...

1-01-1979 | This unit charges a nickel-cadmium battery from the mains to provide a standby power supply for emergency lighting in the event of a mains...

1-10-1978 | The LM 1890 is a general purpose building block for use in visible light and infra-red applications whether they be analogu...

1-07-1978 | Generally speaking, the internal lighting for model railway carriages is powered direct from the voltage on the rails. However, this...

1-07-1978 | This simple circuit can be used as a party trick which should completely flummox anyone who has little knowledge of electronics