4.39 A designer has a supply of diodes for which a current of 2 mA flows at 0.7 V. Using a 1-mA current source, the designer wishes to create a reference voltage of 1.3 V. Suggest a combination of series and parallel diodes that will do the job as well as possible. How many diodes are needed? What voltage is actually achieved?

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4.39 A designer has a supply of diodes for which a current
of 2 mA flows at 0.7 V. Using a 1-mA current source, the
designer wishes to create a reference voltage of 1.3 V. Suggest
a combination of series and parallel diodes that will do the
job as well as possible. How many diodes are needed? What
voltage is actually achieved?
Transcribed Image Text:4.39 A designer has a supply of diodes for which a current of 2 mA flows at 0.7 V. Using a 1-mA current source, the designer wishes to create a reference voltage of 1.3 V. Suggest a combination of series and parallel diodes that will do the job as well as possible. How many diodes are needed? What voltage is actually achieved?
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