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Created April 19, 2023
Last modified April 19, 2023
Tags current-mirror  


Introduction to a limitation of the classical current-mirror circuit.


Even with ideal identical components, the current-mirror has some limits.

In the mirrored path, we cannot get more voltage than for the "copied" path, so, in its elementary form, the resistance in the copied path cannot be larger than in the copied path, as varying the resistance of the mirror path would show us.


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