This noise generator for the audio band was found in a British publication from the 1970s. The circuit can be implemented with modern equivalent transistors.
The idea of this 2002 circuit is to turn on a coffee maker automatically at dawn. The sensor is an...
This circuit, which operates between 7 and 30 MHz, was found in Radio Electronics from the 1980s....
This circuit has a very high input impedance and a very low output impedance. We found it on a...