Recent content by abadi

ooooo my problem was, i test the amplifiers together thanx alot, i will work on it

:( bro, I am really stuck i have been trying for almost 3 days to resolve my problem but i couldn't how to solve the ][ open loop dc ? can you give my an advice ?

you can see my equivalent circuit for rogowski coil at the attachment i have tired that amplifier, and it doesn't work, that's why I am using different circuit that i got it from different Forum. and now I am trying to modify it to let it suitable for my project

thanx bro but what i know is the equvelant parameters are Rc, Cc and Lc which are coil resistance and coil capacitor and coil inductance. but in your design , you just use Rc and Lc ! what i know about the coil, it will increase rapidly when the frequency increase, and it will reach a point...

hi i have one question bro now i have to simulate may expriment by a Pspice but I am facing a problem in getting the parameters of Rc, Lc and Cc beacuse i found many equaction for them and I am confusing which one is to use and my second question is what is the conductivity Value of copper ?

thanks bro for a clear information you gave i will try to do my expriment on this coming monday on the lab and see how its going to work wish me all the best and thanks again

but I am measuring Ac not DC

What kind of signal are you trying to measure with the Rogowski coil? answer --- > I am using sin wave signal Do you have a specific application in mind? answer --- > measuring a frequency from 100k Hz to 1M Hz Rogowski coils are usually used to measure the dc magnetic fields around wires...

thanks bro for the information you gave me but unfortunately I am measuring Ac Voltage im using a function generator to preduce an AC volt that pass through a ressistor , so, there is a current passed through a resistor buy using the coil i can measure the current , by the relastionship...

you really make me blurrrrrrrr so, you mean the above circuit is totally wrong ?? the coil contain 160 turns i conntnect the function generator to produce AC Voltage ( 14 V ) through a resistor ( 100 ohm ) and i let the wire to pass through a resistor when i increase the frequency , the...

yeah even me i didnt get it well but they explain to me and said " The PI feedback adds a 2nd order high pass to the integrator characteristic. The capacitor sets the second high pass corner at about 0.3 Hz, the first at about 1.4 Hz is set by the feedback gain. To get a suitable roll-off...

hiii guys im doing my FYP on amplify the voltage from a rogowski coil just to make it short i have already design the coil which can detect a 50k frequency and gives pick-to-pick = 10mV Ac now, i have to design an amplifier that can give an actual value. so, i have already got a...