Content for LM3915

LM3915

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.

Another Sound Level Meter Circuits

“This is the additional project for the Sound Level Meter (From hereafter as SLM) circuit making. I introduced the SLM prototype in the previous instructable as below. https://www.instructables.com/Sound-Level-Meter/ While working on the SLM prototype, I thought …

Sound Level Meter

“This is a sound level meter circuit consisting of an electret condenser Mic, pre-amplifier circuit using NE5534/TL071 and LM3915 bar/dot display driver chip. According to the sound pressure captured by Mic, this device shows sound levels with LEDs …

How to Make Stereo VU Meter

“In this project, i will show you how to make a simple & easy Vu Meter or Audio Meter using LM3915. What is a VU meter circuit? A VU meter is also an audio Visualizer that has a group of LEDs …

Simple 20 LED Vu Meter Using LM3915

“The idea of making a VU meter has been on my project list for a long time. And finally I can make it now. The VU meter is a circuit for an indicator of the audio signal strength. The VU …

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 …