We found this mains-powered switch circuit in Electronics Now magazine from July 1994. It could be used in a table lamp or touch control.
This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the...
This circuit generates low-frequency sinusoidal signals. The variable capacitor is dual and the...
With this circuit, a well known configuration, small speakers and even low-impedance headphones...