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Circuits designed by David Johnson, P.E.
Last Updated on:
Saturday, December 23, 2017 02:27 PM
List of Dave's Circuit Designs
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AC to AC Converters
AC to DC Converters
Current Monitors |
ISOLATED AC CURRENT MONITOR
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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. |
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Click
on Drawing Below to view PDF version of Schematic |
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