Circuit diagrams for radio amateurs

Circuit diagram Notes:In this circuit, the 7815 regulatates the positive supply, and the 7915 regulates the negative supply. The transformer...

Charge your iPod without connecting it to a computer!Using the USB port on your computer to charge your player’s batteries...

For several years I use two PSUs, which are used in sources consulted during the examination and establishment of...

It is known that multi-band amplifiers will significantly improve the sound quality sound-reproducing equipment. The separation of the frequencies in...

This simple circuit is a two-person game of strategy and speed - and potentially, agility and athletic fitness. Each player...