I'm trying to cancel wiper resistance of a 10 kΩ DiGiPot that controls output voltage of a switching power supply. I'm using MCP4131-103 that has 120 Ω wiper resistance @0% pot position. This wiper resistance limits the max voltage that I can get from power supply.
In [this post][1] there is a method that I have simulated it in EasyEDA:
[![enter image description here][2]][2]
But there is an issue! I want to use LM358 that is not a bipolar op amp both because I have it in my disposal and also it needs a single power supply (0-12 V) instead of (-6 to +6 V).
So I tried this sketch that apparently is not right:
[![enter image description here][3]][3]

Can please someone tell me how can I reach a solution using LM358?


  [1]: https://electronics.stackexchange.com/questions/495938/
  [2]: https://i.sstatic.net/ds6VG.png
  [3]: https://i.sstatic.net/WS6xW.png