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In the image below, I do understand that a grounded inductor can be simulated using op amps. However, to make a floating simulated inductor, I have read some posts that said two ground simulated inductors must be connected back to back. I am not sure why they should be connected back to back, as shown in the bottom diagram. Why must they be connected back to back?

enter image description here

enter image description here

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    \$\begingroup\$ You posted a very similar question yesterday. If you don't get answers to your question, we ask you to improve the question by editing it, not re-post it. \$\endgroup\$ – The Photon Jun 3 at 16:07
  • \$\begingroup\$ Here you can find a simpler version: 1- Grounded inductor obrazki.elektroda.pl/3464261900_1482234787.gif and the floating one youtu.be/AEJtajaRj_s?t=289 the same lh6.googleusercontent.com/… \$\endgroup\$ – G36 Jun 3 at 16:17
  • \$\begingroup\$ While they are not exact duplicates (they are different questions on the same topic), @SEJ you should go and answer your question (because you found a floating inductor). \$\endgroup\$ – Voltage Spike Jun 3 at 16:26
  • \$\begingroup\$ @VoltageSpike Thanks for the reminder. Though I'm not exactly sure how to accept comments as answered, I edited the title. I'm sorry I'm not very used to the stackoverflow community. I've only just made an account. Thank you for helping me adapt. \$\endgroup\$ – SEJ Jun 3 at 16:40
  • \$\begingroup\$ @ThePhoton I did indeed post that question, which led to this question. Yes, I found out that the term I was trying to find was 'floating' simulated inductor, which was very helpfully answered. However, I thought editing the entire question to asking why two ground simulated inductors need to be connected back to back to simulate a floating inductor would be too much of a change. Thank you for the suggestion though, I'm still getting used to this blessed community. (edit: spelling) \$\endgroup\$ – SEJ Jun 3 at 16:45

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