Stephan, On 11/21/2013 02:46 PM, Stephan Sandenbergh wrote: > Hi, > > I'm curious about the level of isolation that is achieved by an opamp based > isoamp. I'm referring to ones described here on Bruce Griffiths' page: > http://www.ko4bb.com/~bruce/IsolationAmplifiers.html > > Anyone has a number for this? > > I've tried googling it, but the results are mostly filled with the other > kind of iso amplifier where isolation refers to galvanic isolation. An interesting article is here
http://tf.boulder.nist.gov/general/pdf/498.pdf The schematic shown does not disclose any components, but gives topology. Should not be too hard to populate and dimension. Assume 2N3904 and 2N3906 in SMT packages. SMT mounting improves isolation. It refers to [1] http://tf.boulder.nist.gov/general/pdf/90.pdf [3] http://tf.boulder.nist.gov/general/pdf/971.pdf Other interesting reads: http://tf.boulder.nist.gov/general/pdf/967.pdf http://tf.boulder.nist.gov/general/pdf/1139.pdf I have not yet located the De Marchi article. Cheers, Magnus _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
