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 was suggested by Siliconix in a 1980s publication. The circuit uses components from the time...
This amplifier with two FETs in direct coupling (cascode) was found in a 90s Popular Electronics. The...
This circuit uses the 7815 regulator to obtain a voltage for motor control num shield for PC. The...