rfranzk Posted June 24, 2009 Report Share Posted June 24, 2009 Hello Everyone. I have a fairly inexpensive clamp on multimeter with ac current capabilities 20 amps to 400 amps. I work more with dc and am curious if a modification could be made to read dc current with some accuracy. I sometimes measure currents at 300 to 400 amps dc with voltages between 12 and 48 volts. (Automotive and electric golf carts) I have a dc current probe that interfaces with my dmm that is limited to 30 amps for smaller measurements. Thanks in advance for any ideas and feed back. rfranzk. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted June 24, 2009 Report Share Posted June 24, 2009 It's not possible.Cheap AC clamp meters use a current transformer principle which only works on AC currents, for DC you need a hall effect sensor. A DC clamp meter will cost more but that's life. ;) Quote Link to comment Share on other sites More sharing options...
rfranzk Posted June 25, 2009 Author Report Share Posted June 25, 2009 Thanks for your reply. I guess I will either have to pony up and purchase one or put another project on the burner. I appreciate the input. I would be interested in schematics for a dc clamp on meter. Thanks. rfranzk Quote Link to comment Share on other sites More sharing options...
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