Flat response amplifier CIR16474S CB9390E (CB9390E)

This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today.

Programmable Timer (CB18717E)
The maximum time of this timer depends on the capacitor next to the adjustment pot. With 2,200 uF the...
Heating Circuit (CB12747E)
In the figure we have an interesting possibility that consists of the activation of a heating...
Precision Delay with Unijunction (CB21407E)
This circuit is from General Electric documentation from 1965. The SCR and unijunction transistor may be...