From: Johannes Wolf (mp2100_at_mail-gw.estec.esa.int)
Date: Wed Aug 06 2003 - 07:13:07 PDT
Since the noise is generated due to the magnetostriction in the little
transformer used for the backlight, this noise is not directly dependent on
the electroluminescent backlight foil used. In case the foil has significant
less capacity the frequency will increase and might go into the ultrasonic
range taht you cannot hear anymore, but in principle the noise will be
there.
In my case I cannot hear any difference between my original Newt and the one
with replaced backlight.
Cheers
Johannes
> -----Original Message-----
> From: newtontalk-bounce_at_newtontalk.net
> [mailto:newtontalk-bounce_at_newtontalk.net]On Behalf Of Gert Menke
> Sent: Wednesday, August 06, 2003 2:42 PM
> To: newtontalk_at_newtontalk.net
> Subject: Re: [NTLK] Backlight fun-replacing backlight
> Hi!
> Johannes Wolf wrote:
> > I am probably one of the few who got a backlight exchange for
> free in the
> > frame of the german Independent Newton Support backlight
> project (testing
> > and developing foils with backlight4you).
> Lucky you! :-)
> > As far as I can tell the properties of the original backlight and the
> > replacement are pretty much the same regarding brightness and
> readeability
> > of the display.
> > But the replacement is supposed to last much longer.
> That's good news. :-)
> Do you know anything about the noise emission of the replacement
> backlights?
> Regards,
> Gert
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