LCD display driver (CB7558E)

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

Unijunction Proportional Control (CB16914E)
This circuit is from an old French publication. With it we can have full wave control of a charge...
Two Transistor Shield (MSB121E)
This circuit can be used to control loads up to 500 mA from the outputs of microcontrollers such...
Fence Electrifier (CB12895E)
This circuit is from an Argentine publication from the 1970s but can still be assembled with...