This circuit has a gain of 6 dB for low frequencies from 85 Hz and can be used in a mini subwoofer. The circuit is from a Radio Electronics from March 1990.
This circuit was found in the Italian magazine Radio Elettronica from September 1977. It consists of a...
Found in documentation from the 1980s, this circuit applies to other 3-terminal voltage...
This circuit was found in a 1980s documentation. The IC is the 7400 and should be powered with 5...