- #1
Glenn Emmers
- 5
- 0
Dear all,
I'm trying to combine the singals of both a hall sensor and a rogowski coil.
The proposed circuit is given in the following figure:
This should be the physical form of the implementation given in the following figure:
I can somewhat see a summing amplifier formed by A2, where the gain is determined by selecting R2, Rcoil and Rhall. I imagine C2 adds the low pass properties to this system. I simply don't see what the purpose of the lower opamp is. Can someone explain me how this circuit works and how I can determine the components C3, R3, Ri, Ci and maybe also C2, with Vcoil and Vhall being known
(Vhall will be in the range of 300 microV and Vcoil in the range of 2microV).
Thanks in advance!
Kind regards,
Glenn
More information can be found in the attached file:
I'm trying to combine the singals of both a hall sensor and a rogowski coil.
The proposed circuit is given in the following figure:
This should be the physical form of the implementation given in the following figure:
I can somewhat see a summing amplifier formed by A2, where the gain is determined by selecting R2, Rcoil and Rhall. I imagine C2 adds the low pass properties to this system. I simply don't see what the purpose of the lower opamp is. Can someone explain me how this circuit works and how I can determine the components C3, R3, Ri, Ci and maybe also C2, with Vcoil and Vhall being known
(Vhall will be in the range of 300 microV and Vcoil in the range of 2microV).
Thanks in advance!
Kind regards,
Glenn
More information can be found in the attached file: