LCD display driver (CB7558E)

This LCD driver circuit uses a common component today. The circuit is from 90's documentation.

Robot Eyes (CB12397E)
Found in a 1990 Electronics Handbook, this circuit causes an LED to flash when the phototransistor receives...
Single DC Power Supply 9 and 12 V (CB20200E)
This simple low current source for the bench was found in ancient American documentation. The...
SCR Power switch (half wave) (CB11595E)
In this circuit, a switch, reed-switch or sensor is used to control a half-wave alternating...