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 found in Texas Instruments documentation from the 1980s. The circuit has a Q less...
This circuit is from an English publication from 1978. The operational admits equivalents and the...
P1 on this Radio Shack circuit is a 6 V lamp with current up to 500 mA depending on Q2. The...