This circuit with pressure sensor was obtained from the Encyclopedia of Electronic Circuits volume 5 of 1995. Note the construction of the sensor with rubber and conductors.
We found this circuit in a Popular Electronics from the 80s. It is a game of reaction speed for 3...
This circuit was obtained in the Linear Technology Applications of 1997. The circuit uses common...
This circuit appeared in the September 1973 issue of Radio Electronics magazine and was...