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Struggling w. a Single Supply Integrator

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rstofer:
Maybe it's complicated like Maxim says in this white paper:

https://www.maximintegrated.com/en/app-notes/index.mvp/id/1155

I was thinking about using modern single rail op amps for another analog computer.  I think I'll give that a pass.

bson:

--- Quote from: eev_carl on December 12, 2018, 12:22:08 pm ---

--- End quote ---
You're using the V2 node for a supply voltage while V2 is actually a voltage source, not a node name...  Not sure what Spice will do in this case, but quite probably not anything reasonable.  (The reasonable behavior IMO would be to produce an error.)

rstofer:
Right, use an OUTPUT port where you generate Vref and an INPUT port at the op amp.  The port icon is on the toolbar between Gnd and Resistor.

Wimberleytech:

--- Quote from: rstofer on December 14, 2018, 06:51:27 pm ---Right, use an OUTPUT port where you generate Vref and an INPUT port at the op amp.  The port icon is on the toolbar between Gnd and Resistor.

--- End quote ---

Ditto...I simulated it with ports configured properly and it works fine.

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