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 ...

Power plants use indicators to monitor process parameters such as pressure, flow, temperature, voltage, current, and vibration. Unless a facility is relatively new, it likely has analog panel meters; ...