Question

Widlar current source was introduced to obtain a smaller output current.

(a) True

(b) False

The 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

Answer 1

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.