Help with LTSpice

Job ID: 34017344

Budget: $10 – $30 USD

I have a few circuits in LTSpice. I need your help in understanding them and customising them.
https://docs.upb.ro/wp-content/uploads/2021/05/REZUMAT-TEZA_Ionescu_EN.pdf

Related categories: Engineering Electronics Matlab and Mathematica Mechanical Engineering Electrical Engineering