TTL pulse detector and indicator (CB22414E)

This TTL circuit with the 7400 serves as a pulse indicator. It must be supplied with a voltage of 5 V.

General purpose buffer (CB9312E)
Found in documentation from Analog Devices from the 90s, this amplifier uses a component from the...
2 lithium batteries charger (CB9128E)
This charger was found in an 80's Electronic Design. The circuit uses components from that time....
Telephone Tone Generator (CB13935E)
This double tone generator uses a specific integrated circuit, having been found in a 1977 CMOS...