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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Monday, April 21, 2008 04:18 AM

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

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

Constant Current / Current Sink
 

Master Schematic Category List - David A. Johnson, P.E.
 

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