This normally open, two-terminal, high-sensitivity circuit was found in General Electric's technical documentation from the 1980s. The circuit is half-wave.
This circuit can be used to add a delay to a logic signal as shown by the input and output...
This circuit was found in a Poptronics of the 90's. The FET is double-gate, and the frequency...
This rain, flood or leak sensor was found in a 90s Popular Electronics. All the components used are...