5 V reference LT1027 (CB14595E)

This circuit is from the 1993 Linear Technology Applications Databook. The component is uncommon today.

Gain 100 Operational 741 (CB13537E)
This traditional configuration is from a 1976 publication, showing that nothing has changed since...
Low Battery Detector (CB6515E)
This circuit was found in an 80's EDN. The circuit uses a current common CMOS, the 4093 powering...
Dripper (CB10268E)
This circuit was obtained in a1969 magazine. The magazine no longer exists, but the circuit can be...