This circuit is from the 80's integrated circuit manual itself. The component is not as common today as the MOS transistor used. The circuit can be adapted for modern applications.
The transistors in this 1978 circuit can be BC548 and 1N4148 diodes. The electrolytic capacitors can be...
This circuit was obtained in the 1994 National Linear Application Handbook. The circuit admits other...
This is the basic version of a gain 20 amplifier with the LM386 providing a few hundred...