The circuit shown was found in Intersil documentation from the 90s. The formula allows to calculate the voltage obtained as a function of the values of the resistors.
This compressor that enhances the voice range is from the 1990 Motorola Linear Databook. The...
Found in an Electronics Now from the 1980s, this circuit uses some components that are still...
This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be...