| 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...
All items tagged with Circuit and Circuit Shorts (40)
| 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!
| After the previous episodes about (ancient) radio techniques, we now return to a very house and garden, or more specifically, kitchen circui...
| Last week we tempted you with a preview of the reflex receiver; in this instalment we will continue to develop this idea.
| In the previous instalment we looked at the simplest possible radio receiver: the diode receiver. And in order to tickle a little bit more s...