| Although the timer was designed specifically for use with an ultra-violet-light box, it may, if course, be used for other purposes as we...
All items tagged with light and Timer (4)
| Simple triangle-wave generators have a weakness in that the waveform of their output signal normally cannot be modified. The circuit pre...
| Few of you will be impressed by the fact that this circiut tuns on a light if you press a switch. The thing is, however, that the light goes...
| 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...