AVR-Chat

mago Umandam Wrote
>This is DC. The system is high voltage (70 V) low current (0-500mA)... 
>   
>  regards,
>  mago
>
>Alex Shepherd <lists06@ajsystems.co.nz> wrote:
>          > A idea on how to 
>> measure current on high voltage systems is highly appreciated?
>
>Is it DC or AC and what sort of wave form?
>
>If it's AC then maybe use a Current Transformer or one of those isolated
>Hall Effect current sensors and use your AtoD to measure the low-voltage
>side.

Hall effect will work quite will on DC.  It does have the advantage of
being isolated and not affecting the voltage drop on the line, although at
that voltage and current I don't think that would be a significant issue.

Robert


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