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| Low cost DC current transducers - where from? |
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| DTJ:
I'm looking for a source of DC current transducers - the sort that clip over a wire and have a flying lead back to the measuring circuitry. Rough specs: * +/-10 DC Amps max (5A might do the job) with an accuracy of 1% or 2%. * Preferably something that only needs a single rail supply (5V or 12V?) rather than dual +/- rails * Split core type to clip over the wire. * Low cost. * Quantity - a few initially, maybe 50 or more down the track. * Edit: Preferably a main stream supplier or company for continuity of supply etc. Something like the one in the picture attached below. I can only seem to find ones costing well over Au$100. Do less expensive units exist? Any pointers? Thanks! |
| t1d:
https://www.google.com/search?q=diy+dc+current+sensor+circuit&client=firefox-b-1&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwiEsOWLwb_eAhVFyYMKHddzDjwQsAR6BAgAEAE&biw=1280&bih=667 https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1311.R6.TR11.TRC1.A0.H1.Xdc+current+.TRS0&_nkw=dc+current+sensor&_sacat=0 |
| BrianHG:
https://www.aliexpress.com/wholesale?spm=2114.search0104.8.4.4af33b3buGpXz3&initiative_id=QRW_20181106020524&SearchText=hall+transformer&productId=2029088141 Careful with some of the above EBAY devices, some only sense AC, not DC. |
| BrianHG:
Here is one source: https://www.alibaba.com/product-detail/split-open-loop-hall-current-transducer_60797005311.html Note, to drive the DC sensing electronics, these guys require a +/-15v DC supply. |
| Zero999:
The single supply for bipolar current sensing is quite likely the show stopper. Although it's possible, it's certainly not something which is normally implemented. |
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