This damped oscillator that mimics the sound of a gong was found in 90s American documentation. The circuit signal must be applied to an external amplifier.
The figure shows how to implement an alarm buzzer in an LM3914 to warn about crossing the scale...
Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on...
May 2017 - Mouser Electronics is delivering a voice recognition kit from NXP Semiconductors. The...