This circuit can be used with motors or resistive loads, such as heaters and incandescent lamps. The circuit is from Popular Electronics from the 90s. All components used are common.
This double tone generator uses a specific integrated circuit, having been found in a 1977 CMOS...
This circuit is used to test PNP or NPN transistors giving the status indication through LEDs. The...
This dimmer for incandescent lamps was obtained from an American 1990s documentation. The circuit...