How can I design a circuit that characterizes photodiodes and phototransistors (as output/input)? That circuit should communicate electronically over an isolated link where one side runs a low voltage system and runs a high voltage on the other

  • \$\begingroup\$ What do you want to characterize about the photodiodes or phototransistors? \$\endgroup\$ – The Photon Sep 23 '20 at 1:09
  • \$\begingroup\$ photodiodes and phototransistors are both sensors (input devices) \$\endgroup\$ – jsotola Sep 23 '20 at 1:14
  • \$\begingroup\$ Do you want to do this with discrete components? You can achieve this with an opto-isolator see en.wikipedia.org/wiki/Opto-isolator \$\endgroup\$ – mhaselup Sep 23 '20 at 4:10

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