Amplifier with different output (CB9057E)

This circuit was found in a 70s National Semiconductor manual. It has a different output way for coupling to the speaker.

Circuit To Observe Transistor´s Characteristic Curve (CB1287E)
We found this circuit in an old publication on oscilloscopes. Its purpose is to observe the Ie /...
Wien Bridge Oscillator 741 (CB14905E)
This circuit was obtained in an American publication of 1989, but the components are current. The...
MAX4007 Nano Power Operational Amplifier
April 2017 - Mouser Electronics already has the MAX4007 from Maxim Integrated in its inventory, an...