Optical sensor for PC (CB20548E)

This circuit was found in a PC documentation from 1996. It can be used as a shield with modern microcontrollers.

Automotive Voltage Regulator MC3325 (CB14580E)
This circuit uses an unusual component today which is the integrated circuit. We found this...
Resistor voltage control (CB20758E)
This circuit was found in an old American documentation. The operational used is of the...
1.3 Ohm Analog Switch (CB12517E)
In figure 1 we have an application for NLAS5113, a new device from On Semiconductor...