This circuit senses AC audio voltage supplied to the car-radio loudspeakers and displays it as power using a LED bar graph, achieving at the same time an attractive visual effect. It is designed to ...

It used to be a must-have on any hi-fi, a pair of moving coil meters or LED bar graphs, the VU meter. Your 1980s boombox would have had them, for example. VU, for “Volume Units”, is a measure of audio ...

The LM3914 LED bar graph driver was an amazing chip back in the day. Along with the LM3915, its logarithmic cousin, these chips gave a modern look to projects, allowing dancing LEDs to stand in for a ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Bel Digital Audio introduced a 2U audio monitor/de-embedder that features 16 individual ...

Bel Digital Audio is launching a new 2U audio monitor/de-embedder that features 16 individual high-resolution LED bar graph meters. The new unit provides audio monitoring of 3G, HD and SD SDI video ...