Flat response amplifier CIR16474S CB9390E (CB9390E)

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

Guitar Preamplifier using the 741 (CB4429E)
The circuit shown uses the 741 operational amplifier, but lower noise and higher gain equivalents...
Darlington Stage with Feedback (CB975E)
This circuit was found in a 1968’s publication and uses germanium transistors. Equivalents can be...
Inverter for automotive use (CG25728E)
The inverter circuit shown in the figure provides a voltage of around 110 V with a rectangular waveform...