Voltage levels and VU meters...

[Jaroslav Lukesh]

Back ....

Its great idea for that. But I think that you will need precision 
Analogue->LEDstripe converter, try to use some specialized chips. Batz (All
Electric Kitchen, www.aek.com) do not have currently this info at heir
pages, 
but in history yes. I have printed his article about multichannel VU meter.
You can use uA170 or other LED stripe converter too. But I think that you
will need more than 10 LEDs per channel, sure? In this case, you will need
to design more specific VU meter (could be use one chip microcontroller
with internal AD converter) with switchable properties (analog master,
digital master etc). Precision of this solution is excellent and easy to
build adapter for more channels (using multiplexers and data latches) - all
channels will have same response and should be have different rise/fall
times, display modes etc. for each channel. 

---> retro in digital :-)

But I dont want to programming these...


Jerry


> What I need is some sort of average level meter to tell me whether or not
> I've pre-amp a signal up to something the modular runs with
> internally.....quite frankly I could do it with three LED's and a bunch
of
> comparators  but it wouldn't look as good....I might well use the design
in
> some sort of final mixer stage too...a white panel 18" x 9" covered in
knobs
> and sliders with illuminated circular VU meters....doesn't sound very
retro
> at all :-))
> 
> chrisc