AW: [sdiy] Trying to remember that chip

[Happy Harry]

There was also a LM3916 with VU response

H^) harry


>From: "Ullrich Peter" <Ullrich at kapsch.net>
>To: "J. Larry Hendry" <jlarryh at iquest.net>, <synth-diy at dropmix.xs4all.nl>
>Subject: AW: [sdiy] Trying to remember that chip
>Date: Wed, 1 Aug 2001 08:46:00 +0200
>
> >OK, I had this schematic.  It was based around a single chip.  There
>were a
> >couple of different versions of said chip.  Basically it was a multiple
>LED
> >driver based on an input voltage.  Seems like it had a pin where you
>could
> >select whether only one LED was lit, or all of the LEDs up to the
>measured
> >point.  I am thinking maybe it was available for linear measurement and
>then
> >a VU version.
> >
> >But, alas, I cannot find it anywhere.  My brain has gone into total
>fade.
> >Does this chip ring a bell with anyone?  I am sure I put that somewhere
>good
> >for future reference.  However, I am reaching that age I have trouble
> >remember where I put stuff.  Sigh....  If I had a chip number, I guess
>I
> >could re-create my research.  I have seen someone here on the list
>mention
> >this chip before.
>
>You mean the LM3914 LM3915 chips from National I think.
>You are right there is a linear (I think the LM3914) and the logarithmic
>(LM3915).
>
>Forget the UAA 170 and UAA180 chips... they are old and don't work
>nice...
>
>Ciao
>Peter
>
>         \|/
>        (o o)
>--oOOO--(_)--OOOo------------------------------------------------------
>                    Ing. Peter Ullrich         mailto:ullrich at kapsch.net
>                    Homepage: www.ullrich.at.tt , http://come.to/ullrich
>                    http://www.geocities.com/SiliconValley/Heights/3586/
>    .oooO           Hardware & Software Developer /  Electronic Musician
>    (   )   Oooo.   KAPSCH AG / ECCN Control Systems    Vienna / Austria
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