Circuit diagrams for radio amateurs

Judging by foreign Amateur literature, skeletal slit the antenna is popular at frequencies above 20 MHz. In a published article...

In the present article describes a powerful pulsed source to power various electronic devices. It is built on a...

The impact head direct radiation that is produced it sound pressure, as is known. proportional to the vibrational speed of...

Detects if a device is not properly connected to its supplySuitable for battery chargers, portable appliance supplies etc.The above circuit...

For small portable УSW radio stations use short helical antennas is justified due to their durability and ease of use...