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Author Topic: Cheap current clamp transducer (for Oscilloscope ) they should be avoided  (Read 2738 times)

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Online Kiriakos GR

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In past months I did watched videos made by kids them taking apart their Cheap current clamp transducer.

Unfortunately and always such videos they are by 95% useless, by judging comments made by the one whom take this footage.
One person at that age his is unable to see the big picture due lack of basic knowledge. 
But even older kids fall at identical mistakes, because they never got a quality made current clamp transducer in their hands.

Generally speaking any current clamp transducer this is an antenna, this designed to measure electric field at the section of the jaws.
An truly well build current clamp transducer will do just that, and good shielding of electronics this will prevent other electromagnetic fields from be picked up.

Quality of plastic that such current clamp transducer is made, this is important too, cheap plastic acts as guitar speaker, vibrations alone they do create false readings, and quit often inner cheap pots they get out of calibration.

One well build current clamp transducer, this will have ten-turn pots.
Plastic body this would be made by material which it does not magnify vibrations but rather minimize them from them be sensed from it inner electronics circuit.
Electronics shielding this is also of great importance this eliminating as much as possible pick up of electromagnetic radiation caused of nearby sources.

Even at current clamp transducer (for Oscilloscope ) the devil this hides in the details.
Cheap current clamp transducer this can not be trusted at all.

Regular priced current clamp transducers they are better but not perfect, even so actual measurement this by a higher percentage it would be more accurate and error free most of times.
If you care to be in full awareness of electromagnetic radiation in your environment,  then you should use a spectrum analyzer first, prior powering on your current clamp transducer. 

Personally I did have my chance to see the unseen few weeks time after my Oscilloscope purchase.  ;) (May 30, 2013)

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