current sensor based on Rogowski coil

Thread Starter

abadi

Joined Nov 8, 2009
16
hi guys
dont know what to say

im just having my final year project and its about "current sensor based on Rogowski coil"

and i have read alots about it in enter net ,

but my problem is , i dont know how to start my project :(

so, i hope you guys can help me on that :

how to start this project ???????????
 

t_n_k

Joined Mar 6, 2009
5,455
hi guys
dont know what to say

im just having my final year project and its about "current sensor based on Rogowski coil"

and i have read alots about it in enter net ,

but my problem is , i dont know how to start my project :(

so, i hope you guys can help me on that :

how to start this project ???????????
Your problem is probably not so much about where to start - rather about the vague definition of your design goal. A project about "current sensor based on Rogowski coil" is too general.

As a starting point write a brief specification possibly including things like

1. What you need to measure, including the magnitude, frequency and type(s) of waveform.
2. What output signal type & range for a given input current type & range you need.
3. What form of indication - CRO, meter (average, RMS, etc) ????

Once you can answer some of these questions, that might help you make some decisions about design & construction.
 

Duane P Wetick

Joined Apr 23, 2009
435
Are you looking for a particular inductance or coil size? One reference that might help you is: Inductance Calculations by Grover, ISBN 0 486 49577 9.

Cheers, DPW

[There is no computerized explorer with more than a tiny fraction of the power contained in the chemical analog computer known as the human brain, whose reproduction is easily accomplished by un-skilled labor. WVB]
 

Thread Starter

abadi

Joined Nov 8, 2009
16
thanx guys :)
for the help :D
i will do my best and try to figur-out my project
and i will be back :D
wait for me :D

thanx alots
 

Thread Starter

abadi

Joined Nov 8, 2009
16
hi guys :)
im back
i just want to ask , how can i design the coil ?? is it like bring a plastic shape and round it by a wire or what ?
or there must be special wire ??
 

Duane P Wetick

Joined Apr 23, 2009
435
Do you have any idea as to the size of coil you need? The first step is to find a ring form for winding the coil. Just now I see a coiled poly air hose in my garage, 5" in OAD and 1/2" in tube OD. Cutting a section of this, I can stretch it out and wind a 2 wire coil easily by hand, using any magnet wire size I desire. Winding 2 wires allows both leads to terminate on one end. Using 18 AWG wire, you will need 2 lengths about 40' each. Do you see it now?

Cheers, DPW[Spent years making heaters out of op-amps]
 
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Thread Starter

abadi

Joined Nov 8, 2009
16
thanx bro, i already did it :D

now what type of the amplifier i have to use ?? and why i have to use amplifier ??
and some of the the circuit they use filter also ?? whyyyyy
 
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