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Re: [AVR-Chat] PWM

2006-01-09 by John Samperi

At 09:08 AM 10/01/2006, you wrote:
>you can never know
>which way the value will be off, or by what specific quantity.
>
>   So, with 16 devices each specified to be within + or - 1%, the overall
>tolerance of the network is plus or minus 16%.

Which could be 0%...in theory of course :-). I have used a Burns R2R resnet
for the past 12 years or so to generate sounds for pedestrian crossing
signals, it is not a HIFI system but never noticed any difference in sound
in the some 20,000 units made (shipped to a few countries too).

By the way the cost is nowhere near the >$2 mentioned  before, it takes very
little room, don't need a buffer as I use the audio amp for buffering.

Regards

John Samperi

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Email: john@ampertronics.com.au
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