I am designing a control system, where the forward path has an amplifier in Howland's current pump configuration. I want to derive the TF of the current pump, and also take into consideration the Poles and zeroes inherited from the used amplifier. My approach was appointing Vo = A(V+ - V-) and after i derive Io/Vin i replace the Gain A in the equation with (A/(S + Wp)) but till now i am failing miserably, so any help would be appreciated.

Howland's current pump

  • \$\begingroup\$ A possibly useful document \$\endgroup\$ – Andy aka Mar 9 '18 at 12:50
  • \$\begingroup\$ thanks, but unfortunately this doesn't help as i want to take into consideration the poles and zeroes resulting from the Amplifier. \$\endgroup\$ – Mostafa Mekawy Mar 9 '18 at 17:34
  • \$\begingroup\$ Use a sim for best effect. \$\endgroup\$ – Andy aka Mar 9 '18 at 18:01
  • \$\begingroup\$ could you elaborate on that ??! \$\endgroup\$ – Mostafa Mekawy Mar 9 '18 at 21:41
  • \$\begingroup\$ Use a circuit simulation tool. \$\endgroup\$ – Andy aka Mar 10 '18 at 9:25

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