Some general electronic questions

Other Hardware General Electronics
17

Hello Friends, I am back with a new set of doubts... :thinking:

  1. I recently created a circuit on Falstad using ideal op-amps. Now I want to convert the same circuit into real op-amp. Can you suggest an op-amp for the same and tell me what changes do I need to do to my circuit?
    Circuit Link: https://tinyurl.com/6pcdzysc
    Circuit Image:

    circuit-20210904-0131
    circuit-20210904-0131732×388 11.5 KB

  2. What will happen if I input 9V AC to my LM7805? Will it output DC?

  3. Which driver (other than the FTDI) do you recommend to use with the Pro Mini?

  4. Can you give the names of some common schottky diodes you use?

Regards.