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

Master Category List - Dave's Circuits
 Last Updated on: Friday, July 18, 2008 11:34 AM


AC to AC Converters      AC to DC Converters   Current Monitors

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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

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

AC to AC Converters      AC to DC Converters   Current Monitors

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

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