Although the ubiquitous LM386 IC was designed to be used as an audio amplifier, it has a number of undocumented characteristics that can be exploited to create simple radio receiver circuits that ...

Even in today’s digital, IT-intensive radio plant, there is still a need to design and build one-of-a-kind electronic circuits. Simple devices such as digital tone generators and small distribution ...

[kodera2t] takes us through a few circuits built with these tubes, from a simple subminiature vacuum tube radio to a more complex reflex radio. Taking a walk through this history is an interesting ...

Circuits printed on polymers are currently less ... Gadgets such as cell phones could one day use residual radio signal to supplement their own batteries, but the amounts of energy harvested ...