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A Widlar current source is a modification … 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. The Widlar circuit may be used with bipolar transistors, MOS transistors, and even vacuum tubes. An example application is the 741 operational amplifier, and Widlar used the circuit as a part in many designs. This circuit is named after its inventor, Bob Widlar, and was patented in 1967.tor, Bob Widlar, and was patented in 1967.
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A Widlar current source is a modification … 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. The Widlar circuit may be used with bipolar transistors, MOS transistors, and even vacuum tubes. An example application is the 741 operational amplifier, and Widlar used the circuit as a part in many designs. This circuit is named after its inventor, Bob Widlar, and was patented in 1967.tor, Bob Widlar, and was patented in 1967.
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Widlar current source
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