Temperature control 555 (CB9469E)

This circuit was found in Signetics documentation from the 90's. The circuit performance curve is shown next to the diagram. The sensor is an NTC.

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High Impedance Instrumentation Amplifier (CB15879E)
The circuit in the figure is based on two integrated LM108 and its gain is basically determined by the...
High sensitivity photo Darlington (CB8259E)
Found in a 1968 Ferranti documentation, this circuit can be implemented with modern equivalent...
Car Amplifier (CB24019E)
This amplifier stage was equipped with a Motorola radio from the 70s. The transistors were from...