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How does the circuit in the figure realize photoelectric conversion?

Hardware design
1月 22, 2021 by Fenella 540

To realize photoelectric conversion, is it necessary for chip resistors R1 and R3. And what is the role of R5?

所有評論

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Jihan 發表於 January 22, 2021

The role of R5 should be to simply convert the photoelectric conversion current into a voltage to facilitate the observation of the change signal.

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Mulan 發表於 January 22, 2021

R1//R2 current limit, R3, C1 anti-interference, R3 should be much larger than D1 with light U/I and far smaller than the U/I without light, R5 current limit.

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Bailyn 發表於 January 22, 2021

r5 should be current limiting.

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