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.

Who is the Fastest (CB5033E)
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
Temperature Bridge (CB4523E)
This Wheatstone bridge has a thermistor or NTC sensor, allowing the measurement of temperatures by...
Positive Power Line Current Sensor (CB5217E)
This circuit makes use of a Linear Technology LT6100 having been taken from the component...