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Last Updated on: Friday, November 17, 2017 06:32 AM

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More  AC to AC Converters     
AC to DC Converters
   Current Monitors

ISOLATED AC CURRENT MONITOR
 

This circuit uses a small AC current transformer from Magnetek to produce an isolated voltage proportional to the AC current in the primary winding.  The transformer contains a single turn primary with a low 0.001-ohm resistance.  It can easily handle 30 Amps of AC current and provides at least 500vac of isolation.  With the components shown, the output AC voltage is scaled so 1 Amp of current produces 100mv of AC voltage.

Click on Drawing Below to view PDF version of Schematic

Circuit Isolated AC Current Monitor designed by David A. Johnson (January 20, 2001)

More  AC to AC Converters     
AC to DC Converters
   Current Monitors

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