0
\$\begingroup\$

Why the feedback network is necessary in this optical amplifier ? How the circuit would work without the feedback photodiode ?

enter image description here

\$\endgroup\$
  • 1
    \$\begingroup\$ How do opamps in circuits without (negative) feedback generally behave? In the circuit imagine that the left FD (sensing photo diode) is gone, what would the output of opamp A1 do depending on Ui? \$\endgroup\$ – Bimpelrekkie Jan 30 at 9:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.