| In a not yet dim past we started this series with an ‘energy-efficient relay’. Here is a variation on that topic, and a super-simple one at...
More about Circuit Shorts (63)
| Simply forgot to water it – and then you can wave goodbye to that expensive bonsai. A pity about all the work that went into it… But this dr...
| There will have been a time when you needed to drill a few holes in a wall to hang something up – but what about those electrical wires neat...
| April 1 is quickly approaching again, and in these uncertain and virus plagued times, a little bit of light-heartedness can do no harm. Hen...
| The alarm clock (radio) has seen two significant improvements since its invention. The first is the snooze button, and the second we present...
| Practically any amateur musician will be familiar with the old-fashioned mechanical metronome and its nice ‘double tick’ sound. Here were pr...
| Long ago, before semiconductors became run-of-the-mill, a small neon lamp and a capacitor were used to generate a sawtooth…
| In the second episode of this series we described and energy-efficient relay with a few interesting characteristics. Here the authors elabor...
| Have you ever wondered what an infrared remote control sounds like? With this small circuit you will be able to find out!
| Legions of dog whistles are available from pet shops and by mail order. But with only a few parts you can easily build one that yourself!