The LM3915 datasheet specifies that the IC is a monolithic integrated circuit that senses analog voltage levels and drives ten LEDs, LCDs or vacuum fluorescent displays, providing a logarithmic 3 dB/step analog display. One pin changes the display from a bar graph to a moving dot display. LED current drive is regulated and programmable, eliminating the need for current limiting resistors. The whole display system can operate from a single supply as low as 3V or as high as 25V.

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VU Meter Using 3915 IC

“Today I am going to make a VU Meter Meter circuit that will show the level of audio in the LED.In this VU Meter I will use 10 LED. Let’s get started,”

Simple & Easy to Make Vu Meter or Audio Meter Using LM3915

“In this tutorial i will show you how to make a simple & easy Vu Meter or Audio Meter using LM3915.”

Texas Instruments

Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors, which it sells to electronics designers and manufacturers globally. Headquartered in Dallas, Texas, United States, TI is one of the top ten semiconductor companies worldwide, based …

Simple 20 LED VU meter + datasheet guide

” Im going to show you how to make a nice 20 LED VU meter with minimal parts and effort. Ill show you how datasheet is a very strong and viable tool to work with on your project instead on relying …

Signal Meter (VU Meter)

Today a circuit will be built using an LM3915 IC and it will visually represent the intensity of an audio signal. The LM3915 has an amplitude of 30 dB and the 10 LEDs are activated in 3 dB intervals. If …