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 A simple economical metal detector with your hands on one chip If you have lost the ring, the key, the wrapper... and you know the approxim...

 Metal detector on "Butterfly" synchronization disruptions For beginners, a simple metal detector scheme on two reels is based on ...

 Vladimir Andreevich from the city of Lviv sent a description of the original design of a simple metal detector. The design of the metal det...

 Violation of the battery operating mode (due to improper operation of the vehicle relay regulator, or long-term storage) almost always lead...

 the idea of switching lamps using a regular variable resistor as a control is very good, but the above designs are based on poly comparator...

 The regulator is designed to control the brightness of a portable luminaire powered by a car on-board network made from a car headlight. Th...

 A metal detector detects a water pipe under a wall layer up to 150 mm thick, a sewer pipe - up to 250-300 mm, a modern five-ruble coin at a...