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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