The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
This circuit with only one transistor was found in Japanese documentation from the 1960s. The...
This circuit was found in documentation from Analog Devices from the 90s. The circuit uses...
This sensor circuit from a 1967 Ferranti documentation uses components from the era. The circuit...