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Widlar current source was introduced to obtain a smaller output current.(a) True(b) FalseThe question was asked during an online exam.My doubt stems from Transistor Bias Configuration topic in portion Transistor Biasing and Low Frequencies of Analog Circuits |
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Answer» RIGHT answer is (a) True To ELABORATE: In a current mirror circuit, to obtain lower values of output current, the resistance values required to INCREASE a lot, which becomes difficult to manufacture on an IC. Instead, we use a widlar current source, where an emitter resistance is also present, affecting the output current. |
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