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.
This circuit was found in a 90s Wels' Think Tank. The frequency depends on C2 and R3. The handset...
We found this circuit in a 1981 publication. We applied an audio signal, for example, a music...
This circuit was suggested by General Electric in 1969 documentation. It provides a maximum output of...