This amplifier is from the Philips Databook of 1990. The circuit is suitable for automotive use and has the characteristics given in the table below the diagram.
Found in an English publication from 1967, this circuit generates 5 kHz signals with harmonics that...
This preamplifier circuit for turntable cartridges was found in the March 1994 issue of...
This circuit is from documentation from the 80s, so it makes use of an operational amplifier that...