Linear Ohmmeter LM11 and TL431 (CB14548E)

We found this circuit in Motorola's Linear Databook in 1990. Integrated circuits are somewhat difficult to obtain today.

Operational Triangular Oscillator (CB14081E)
We found this oscillator in the 1994 National Semiconductor Handbook of Linear Applications. The...
Band pass active filter 1 kHz (CB5196E)
The operational amplifier using this 80's circuit is a double 741 of the time. The circuit may be...
Minuteria For Lamps (CB10769E)
This circuit is from a 1978 French magazine Electronique Pratique. The magazine no longer exists, but...