Current transformer with high ratio

peranders · 14th May 2009, 12:42 PM

I'm looking for a current transformer which can take down 40 A rms down to 1-10mA for further transportation in to +-10 V high impedance input. The input is a National Instruments input module. The purpose is to sample the waveform of the current. Most transformers will give me 1 or 5 A out. I'm interested in mA's.

Any clues how to take in an unsulated current signal into a measurement system?

zigzagflux · 14th May 2009, 04:21 PM

I would suggest doing an internet search for transducers.

peranders · 14th May 2009, 04:52 PM

Good idea, never thought about that

but this doesn't give much.

14th May 2009, 12:42 PM	#1
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Current transformer with high ratio I'm looking for a current transformer which can take down 40 A rms down to 1-10mA for further transportation in to +-10 V high impedance input. The input is a National Instruments input module. The purpose is to sample the waveform of the current. Most transformers will give me 1 or 5 A out. I'm interested in mA's. Any clues how to take in an unsulated current signal into a measurement system? __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

14th May 2009, 04:52 PM	#3
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Good idea, never thought about that but this doesn't give much. __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

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14th May 2009, 04:21 PM	#2
zigzagflux diyAudio Member Join Date: Oct 2006	I would suggest doing an internet search for transducers.