non invasive current transformer

227

03:28:25

blue signal is the current
red signal is the voltage

this sensor output ~1v/30A.
the output voltage have been adjusted to be read by an arduino, the arduino read 0-5v so the signal is centered at 2.5v and now +-30A give 1.5-3.5v.

Note that it will work at 60Hz and 50Hz,this is the same thing as a real amp meter clamp but with the centering circuit as addition. 

published 10 years ago

hurz

10 years ago

Interresting!

mmozaffar

9 years ago

Thanks for your circuit . i was seeking for something like this that the output voltage doesn't depend on the amount of current .would you please adjust this circuit for 24vac and output voltage of 12 or 24v to run a relay .another question;how to make this transformer,i mean the primary wound is below 1 turn???????thanks again.

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