Tuesday, September 10, 2013

LM3914 VU Meter





This circuit uses just one IC and a very few number of external 
components. It displays the audio level in terms of 10 LEDs.
The suggested voltage is 9V. The LM3914 is a monolithic integrated
circuit that senses analog voltage levels and drives ten LEDs providing a logarithmic
3 dB/step analog display


Components

  • LM3914 IC
  • 10 LED
  • 100K V/R
  • 1k






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