7-segment display driver (CB20551E)

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

Flash triggered by SCR (CB6754E)
Found on a 1965 Radio Electronics, this circuit fires a signal xenon lamp applied to the SCR from...
Logarithmic amplifier (CB9006E)
This type of amplifier can be found in many other points in this section. This is from a 70s...
Voltage Controlled Inverter Shield (CB13305E)
This circuit is from a publication of the 70s, but it can be easily assembled with the BC548. The...