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Circuits designed by David Johnson, P.E.
Last Updated on: Thursday, December 01, 2011 07:02 AM

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More  AC/AC Converters    AC to AC Power Supplies 
AC to DC Converters   Inverters 

4 – 20ma Current Loop Tester
 
This circuit injects an adjustable current through a wire loop.  Using a digital current meter, the current can be adjusted from near zero to over 24 milliamps.

Click on Drawing Below to view PDF version of Schematic

Circuit 4 - 20MA Current Loop Tester designed by Dave Johnson, P.E. (Nov 2, 2004)

More  AC/AC Converters    AC to AC Power Supplies 
AC to DC Converters   Inverters 

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