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 ******************************************************** Ampertronics Pty. Ltd. 11 Brokenwood Place Baulkham Hills, NSW 2153 AUSTRALIA Tel. (02) 9674-6495 Fax (02) 9674-8745 Email: john@ampertronics.com.au Website http://www.ampertronics.com.au *Electronic Design * Custom Products * Contract Assembly ********************************************************
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Re: [AVR-Chat] PWM
2006-01-09 by John Samperi
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