Found in a Motorola manual from the 1980s, this circuit uses components from the era. The circuit controls lamps from 5 to 48 W from 12 to 14 V.
This traditional configuration that any Series 139 comparator can use is found in the 1990...
The circuit shown in the figure can be used to detect vibrations or to provide amplified acoustic...
This toy organ was found in Popular Electronics from January 1967. It can be constructed from...