All items tagged with Circuit and light (25)

1-07-1993 | The audio signal is applied to the indicator circuit via a 1:1-1:4 microphone transformer. Its level determines which of the two lamps. L,...

1-12-1991 | The switch circuit, intended for low-voltage halogen lights, extends the life of the lamps, because it ensures that the filament current...

1-12-1991 | Many young children will insist on keeping the bedside light on for a couple of minutes after the storybook has been closed and father or...

1-12-1990 | The circuit presented here guarantees that if bulb La1 gives up the ghost. bulb La2 will take over its task, 50 that there is always ligh...

1-07-1982 | 7-14 - elektor july/august 1982 There is a wide range of applications for light sensitive switches: staircase light timers, outdoor illumina...