The circuit shown was found in the 1994 National Semiconductor's Linear Application Handbook. The op amp admits equivalents and the power supply must be symmetrical.
Found in a documentation from the 70s, this source allows to obtain continuous voltages from a...
This simple test circuit was found in the April 1983 issue of Radio Electronics magazine. The...
This amplifier was found in a Radio Electronics of the 90s. The circuit uses unusual operational...