[sdiy] NE545B datasheet (Dolby C NR chip)

[HOSHUYAMA]

Hello Johannes,

I'm sorry for the wrong information.

The patent is not for NE545.
It reffers NE545 as a conventional method.

Sam Hoshuyama


From: "HOSHUYAMA" <houshu at muj.biglobe.ne.jp>
Date: 2007/04/26 22:21:10
> Hello Johannes,
> 
> NE545 is for Dolby B.  (I have some in my parts box.)
> 
> If you or your frined can access the following AES paper,
> pin connection and an application circuit are shown there.
> 
>   http://www.aes.org/e-lib/browse.cfm?elib=2554
> 
> I have a copy of the paper, but, don't want to run a risk 
> of violating copyright.
> 
> Internal circuit is available in a dolby's patent (Pin 
> connection is not shown unfortunately):
> 
>   http://www.pat2pdf.org/patents/pat4068139.pdf
> 
> Sam Hoshuyama
> Saitama, JAPAN
> 
> From: "Johannes 〓erg" <johannes.oberg at gmail.com>
> Date: 2007/04/26 08:20:16
> > I guess the subject line says it all... I have a pair of Dolby C (?)
> > noise reduction chips and need some info, at least pinout. Anybody?
> > I've googled like crazy but to no avail. Is there any other name for
> > this chip?
> 
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