Circuit diagrams for radio amateurs

Many families still operated televisions obsolete brands - ULCT, OPENCT and even USCT. Their the owners, having experience in Amateur...

This circuit disables an alarm clock on Saturdays and Sundays when people like to sleep in but enables normal operation...

When designing a homemade power supply with a certain difficulty causes winding of the mains transformer, especially in the absence...

Owners of obsolete computers for domestic production ineptness often sell them for literally nothing, as in the kit, SJC and...

Device "Pulse"To convert the data of the pulse into an electrical signal is used photoelectric sensor. The sensor consists of...