The circuit was designed based on the functionality of LM3915 integrated circuit to produce a volume unit meter (VU Meter) that will be connected to the output of power amplifier. Power Amplifier – a ...

[Christian Doran] wanted some blinky goodness to go along with the tunes on his PSP. He built a VU meter circuit around a couple of LM324 op-amp chips and fit it into the UMD space on the back of the ...

The circuit was conventionally designed with eight LED audio level meter made out of two low power quad op-amps which utilizes LM324. Volume Unit – an entity equal to a decibel for expressing the ...

Weston type 30, model 862 vu indicator with ‘B’ scale on RCA OP-6 portable amplifier. A Daven resistor network reduced the output from +11 dBm to telco-required +8 for 3 dB line isolation, sent the ...

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 ...