3 V buffer (CB7142E)

This 3 V rail to rail buffer was found in a National Semiconductor documentation. The gain is unit.

Multimeter Adapter (CB2011E)
The purpose of this circuit, which we find in an old American documentation, is to allow the...
Class A No Distortion Amplifier (CB6124E)
This low distortion circuit was found in a 1964 Electronic Design. The transistor admits...
5 to 15 V power supply with the 7805 (CB5877E)
This compact power supply can be used on the workbench for up to 1 A load. The transformer has 1 A secondary...