This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating amplifiers with the same characteristics and the power supply must 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...