This circuit uses a resonant reed switch at the trigger frequency. The circuit is from General Electric in a 1966 documentation. This type of component is rare today.
We found this circuit in a documentation on active filters from 1977. The gain of this circuit is...
The touch sensor of this circuit consists of a single plate that must be touched to obtain an...
The integrated circuit used in this project is not common today, as it was obtained in the Linear...