Balanced Line Driver (CB6223E)

This 600-ohm line driver was found in a 1980s documentation. The integrated circuit used is not common today.

Fluorescent SCR Inverter (CB12328E)
This circuit is from a 1967 publication. It is possible to power a fluorescent lamp from a 12 V...
Triangular generator (CB23738E)
National Semiconductor suggests the circuit in the figure, which uses two LM101 operational...
Reservoir Level Monitor and Controller (CB17448E)
The sensors in this circuit, found in a 1999 documentation, are stripped wire tips at different levels...