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Widlar current source

3:51

Wilson Current source |Linear Integrated Circuits|

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transistor current sources basic Wilson Widlar all 3 are current mirrors too.

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Every maker should have... [Pt.1] a Bob Widlar poster

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Matt Widlar

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BBOY Widlar

A Widlar current source is a modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor, enabling the current source to generate low currents using only moderate resistor values.
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    • Design procedure with specified currents 

    • Finding the current with given resistor values 

    • Output impedance