This circuit was found in a 1968 Motorola documentation. The circuit can be implemented with virtually any photo transistor and general-purpose transistor.
Another dimmer circuit. This dimmer for incandescent lamps was found in the July 1970 issue of...
This limit alarm was found in a 1980s US documentation. Comparators can be equivalent and the...
The L7805 is the SGS equivalent of the 7805. The circuit is from the SGS linear integrated circuit...