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Armature Voltage Feedback


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#1 sandeepa

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Posted 14 April 2008 - 05:03 AM

I am trying to get an isolated armature voltage feedback by driving a transformer in push-pull configuration.However I do not an output till the voltage reaches 1.4V, due to the bridge rectifier.

What is the technique generally used to obtain isolated armature volateg feedback ?Is opto-isolation used in such an application ?

Any suggestions ?

Thanks.

#2 VST

VST

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Posted 14 May 2008 - 03:29 AM

Try with Shottkey diode ,
I have seen a DC PT used for the same in Siemens drive.I will find out the exact diagram and let you know.
Regards,






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