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Aug 17, 2020 at 10:00 history edited D.A.S. CC BY-SA 4.0
added 260 characters in body
Aug 17, 2020 at 9:47 comment added D.A.S. Use common emitter with 4k7. As long as Ic/Ib >10% with loss of gain when saturated. Spec is If=1mA CTR saturated =30% min
Aug 17, 2020 at 9:44 comment added VirtApp This follows this post schematics, but instead 230V on the led side, i want to use 5V. electronics.stackexchange.com/a/208596/207570 - your answer is not very clear to me, i didn't understood what changes i have to do to my circuit.
Aug 17, 2020 at 9:43 history edited D.A.S. CC BY-SA 4.0
edited body; added 3 characters in body; added 35 characters in body
Aug 17, 2020 at 9:24 history answered D.A.S. CC BY-SA 4.0