Found in old documentation as permanent security lighting, this circuit uses common components. The lamps can be replaced by fluorescent inverters or LEDs with appropriate series resistors.
This simple diode test appears at other points in this section. Or circuit can be adapted to use...
Found in Electronics Now magazine in an issue from the 90s, this circuit is different from the...
This circuit inverts the phase of an audio signal, maintaining its intensity. The transistors can...