Circuit - ISOLATED AC CURRENT MONITOR - Circuits designed by David A. Johnson, P.E.

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Circuits designed by David Johnson, P.E.

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Last Updated on: 06/17/2009 03:29:21 PM

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.

AC to AC Converters AC to DC Converters Current Monitors

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