This circuit was obtained in a documentation about old neon lamps. The circuit indicates when a home appliance with thermostat and heating element is on.
This circuit was found in the February 1970 issue of Radio Electronics magazine. The integrated circuit...
November 2016 - The Arduino Zero board, a 32-bit extension of the Arduino Uno for innovative IoT...
This low frequency oscillator with an operational amplifier of type 741 has adjustment of the mark...