Cable Locator (CB21303E)

This audio detector circuit can be used for cable identification. We found it in a Popular Electronics from the 90s.

Maxim MAX20094 and MAX20095 Battery Chargers
Maxim MAX20094 and MAX20095 Battery Chargers Maxim Integrated offers through Mouser Electronics high...
Kelvin Thermometer (CB15929E)
This circuit suggested by Intersil, provides a Kelvin scale of 3 and a half digits in a 7106, with...
Video switch (CB21318E)
Found in National Semiconductor documentation from the 1990s, this circuit switches video signals to...