Sunday, September 1, 2013
Audio Power Level Meter Using LM3915
LM3915 monolithic integrated circuit can be designed a very simple audio power level meter that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display.One pin of the LM39145 changes the display from a bar graph to a moving dot display. LED current drive is regulated and programmable, eliminating the need for
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