Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Embedded

Circuit transfers resistance value through isolation barrier

Posted: 21 Jan 2011 ?? ?Print Version ?Bookmark and Share

Keywords:resistance value? isolation transformer? voltage divider?

The circuit described in this application note monitors a resistance value in a noisy or otherwise hostile environment. Connected across the secondary winding of an isolation transformer, the unknown resistance reflects to the primary where it forms a voltage divider with a 2.2k resistor. The divider produces a reduced-amplitude clock signal that is capacitively coupled, rectified, and filtered to produce a dc output voltage corresponding to the monitored resistance.

View the PDF document for more information.

Article Comments - Circuit transfers resistance value t...
*? You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.

Back to Top