Bidirectional buffer (CB9317E)

This circuit was obtained in a 90s Electronic Design. The circuit uses components from that time.

15 V x 1 A power supply with Shutdown LM340 (CB14264E)
We found this configuration in the Linear Applications Handbook of the National Semiconductor of...
AC Amplifier TL081 (CB15544E)
This circuit is an application for an operational amplifier with field effect transistors from...
Automatic Activating Alarm (CB4778E)
This circuit was found in an old Radio Electronics, but can still be assembled as the components are...