DPP 
http://www.epravo.cz/top/clanky/dohoda- ... 79929.html

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REMOTE_USER, REMOTE_HOST 
http://www.perlfect.com/articles/cgi_env.shtml

$ENV{'REMOTE_USER'} will get the user id.



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Split or Bi-polar Power Supply 
http://www.qrp.pops.net/af-amp-2008.asp
http://www.scienceprog.com/dual-polarit ... ly-source/

LM317 Calculator V2.0
http://www.whatcircuits.com/lm317-calculator-v2/


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Voltage Controlled Filter 
http://fluxmonkey.com/electronoize/opampFilter.htm


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Review: 7 password managers for Windows, Mac OS X, iOS, and Android 
http://www.infoworld.com/d/security/rev ... oid-189597



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LM317 / LM338 / LM350 Voltage/Current Regulator Calculator 
http://diyaudioprojects.com/Technical/V ... Regulator/

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On Zener diodes 
http://www.youtube.com/watch?v=GfaVbKaw5Nk&t=20m45s

http://www.opamplabs.com/zenerreg.htm

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Ebastlirna 
http://www.ebastlirna.cz/modules.php?na ... m&f=41

http://www.aldebaran.cz/

http://www.mylms.cz/text-23-operacni-ze ... -zapojeni/

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logamp exists 
exp. amplifiers wiki

http://en.wikipedia.org/wiki/Operationa ... ial_output

log opamp

http://www.newark.com/texas-instruments ... dp/20M5563

ti. exp. circuit

http://www.ti.com/lit/an/snoa641a/snoa641a.pdf

exp. function

http://www.matweb.cz/exponencialni-funkce

log amps pdf.

http://www.electronics.dit.ie/staff/ypa ... ifiers.pdf

log amp.

http://www.ecti-thailand.org/assets/pap ... pub_24.pdf

prototyping circuit board
http://www.ebay.com/itm/Pack-of-6-Proto ... 256bc6a3d3


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Juno 106 square wave 


+-0.8V amplitude
3,4ms / 1 cycle = 1000 ms / 3,4 ms = 286 cycles / s = 294 Hz =~ D4 (293.7 Hz)

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