This old automotive circuit was found in an August 1971 Radio Electronics magazine article. The transistor is a Darlington transistor rated for the wattage of the bulb.
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...