this post was submitted on 16 Jan 2025
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Questions about the insides of this optocoupler (TLP250) (lemmy.world)
submitted 2 weeks ago by poplargrove@lemmy.world to c/askelectronics@discuss.tchncs.de
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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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[โ€“] ignotum@lemmy.world 4 points 2 weeks 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

[โ€“] ChaoticNeutralCzech@feddit.org 4 points 2 weeks 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.