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Simple Dag-gerboard Position Detector

It is easy to build Dag-gerboard Position Detector Cirucit. In sailing regattas it’s handy to have a dag-gerboard that can be raised and lo...

It is easy make a simple water level detector circuit. To monitor the filling of a bath, a water-tank, or a swimming pool, or to warn when a...

This circuit can be built from readily available low-cost components, some of which may even be hiding in your junkbox! The indicated value ...

In single phase AC induction motors, often used in fridges and washing machines, a start winding is used during the starting phase. When the...

A simple shortwave radio detector is neither very sensitive nor very selective. However, with a little extra amplification we can improve th...

Rotating laser levels, which are very handy for setting objects in a room or garden at the same height, are available at prices of a few ...

Having been affected by earth fault accidents, the author put together this little circuit. It consist of just three elements: the neon wi...