A simple, low cost stereo VU meter using LEDs, which are more robust than traditional needle meters. Connects directly to the speaker terminals of a stereo audio power amplifier to provide an approximate visual indication of the output power.
A pair of LM3915 dot/bar display driver ICs are used to drive 2 rows of 10 rectangular LEDs (7 green and 3 red) in a moving bar display. Each row of LEDs spans a power range of 0-30 dB in ten 3dB steps.
This VU meter indicates "peak music power". Ideal add-on module for any of our amplifier kits, or other audio equipment.Specifications
|Input Voltage||12Vdc (e.g. Order Code 660.446UK with connector 777.001UK or 778.106UK is suitable)|
|Display||2 x 10 rectangular LEDs|
|Board Dimensions||65 x 42 mm|
|Board Connections||Solder pads|
|Product Format||SELF-ASSEMBLY Electronic Kit (KT) Product Formats Info|
LM3915 Datasheet (opens in new tab)