7-segment display driver (CB20551E)

We found this circuit in English documentation from 1996 for PCs. The circuit is for common cathode display.

Audio Oscillator 4049 (CB8794E)
Found in a 90’s Popular Electronics, this circuit uses two CMOS inverters to generate a signal of...
Protected regulator (CB8708E)
This 1965 Electronic Design circuit has short-circuit protection and is suitable for 20 V sources....
Wien bridge notch filter (CB7406E)
This filter was found in an American publication from the 1980s. The circuit can be implemented with...