Found in an old publication about neon lamps this circuit works directly connected to the power grid, serving as an indicator for various situations. Ordinary neon lamps can be used.
This control for motors up to 1 A was found in a Siliconix documentation using its own component....
This 2.2 Hz to 24 kHz filter was found in the February 1995 issue of Electronics Now magazine. The circuit...
This circuit compares the voltages of the two inputs giving as output 0 or 1 according to the...