| In many countries, there is a legal requirement for can and motorcycles to have lights on whenever the vehicle is moving. In even more c...
All items tagged with Time and light (22)
| The low-cost circuit charges two nickel-cadmium cells from the mains to provide a stand-by power supply for a two-lamp emergency light which...
| 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...
| The circuit presented here ensures that bicycle lights remain on for a little while after the bicycle (and thus the dynamo) has corne to...
| Halogen lamps are rightly popular because they give a good light and have an excellent efficiency. Unfortunately, they tend to be costly....
| Virtually all modern cars have a built-in alarm to warn if you have left the lights on when you are getting out of the car. There are, how...
| Many people nowadays do a lot of cooking in their wok, usually on agos or electric stove, but the idea outlined below, which I have been u...
| 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...
| To prevent the dynamo-driven lights of your bicyle going out when you stop in the dark for, say, traffic lights, the simple circuit here...
| This electronic switch is designed to be connected direct to the mains, which obviates a low-voltage supply and so keeps the cost and sp...