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Current Transformer

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Want to measure current without breaking the wire? Then you need this… a current transformer. This device outputs a signal that’s proportional to the amount of current flowing through the wire. Simply use your favorite microcontroller’s A/D pin to measure magnitude.

Tip: Get more output gain by looping the wire more times around.

Can be used on AC too, up to a whopping 75 amps of current!


  • Power via 5VDC Supply
  • AC/DC Current measurements
  • Protoboard Mountable
  • 75A Max


Data Sheet Data Sheet (27.657 KBytes, Document file, Jul 20, 2010)
Get in touch if you have any questions, or ideas for something you want me to build.