Hi Ron
I am sorry I am late a little bit (Nearly 4 months)
Although my education is about electronics I am not proffesional at electronics. I am working as a DPO (Data protection officer)
Actually this my hobby. If I learn some thing new, I get happy to try to teach it to the children educating electronics
This was one of the questions I couldn't answer
I have a circuit in my hand as a working sample made by LF353-N
İt works as a Transİmpedans amplifier and from the output of the first stage feedbacks with an NPN transistor from (+) terminal to the Cathode of BPW34 via NPN
it is a commercial product so I cannot send you the schematic but I explained it
My aim is to understand the logic and make it with only opamps
Thanks
