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Questions about the insides of this optocoupler (TLP250) (lemmy.world)

submitted 1 week ago by poplargrove to c/[email protected]

6 comments fedilink hide all child comments

I haven't really been able to find much on this. I recognize the totem-pole and what that's for. Would love help understanding:

What's the triangle?
What's the rectangle immediately after?
Why are there two outputs instead of one? A lecture I watched claimed this is common.

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[–] ignotum 4 points 1 week ago (1 children)

The triangle is an opamp, as for the other two questions... Don't know, biasing resistor bridge? Not sure why it would have that though

[–] [email protected] 4 points 1 week ago

It cannot be just a bridge, or else its output woukd stay constant regardless of input. There are other mandatory resistors missing in the diagram though.