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Posts tagged Wilson-mirror

Subtag of current-mirror

Anything about Wilson current mirror circuits (also known just as Wilson mirrors), a particular type of current-controlled current source.

A Wilson mirror is an improvement over the simpler 2-BJT current mirror, and uses a 3rd BJT to shield the current-setting transistors from Vce variations using a cascode configuration on the output. This improves the mirror output impedance and accuracy, however it makes its compliance voltage lower.

Wilson current mirror on Wikipedia.

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Q&A Is a BJT 3-transistor Wilson mirror faster than a simple mirror?

My question is trying to understand if there is an effect on the switching time, on both turn-on and turn-off, between the following configurations. A mirror set up to switch a current, and there ...

1 answer  ·  posted 3y ago by Pete W‭  ·  edited 9mo ago by Lorenzo Donati‭

Question current-mirror BJT Wilson-mirror
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