This high-precision circuit was found in documentation from the 1990s. The integrated circuit is an LM111 or another in the series. The circuit has TTL output and can function as a shield.
This circuit was found in an old documentation from Europe. The integrated circuit used is...
I found this circuit in a Popular Electronics from November 1999. The magazine is no longer...
This photometer is based on a Wheatstone bridge that must be balanced by the linear potentiometer P1. The...