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At what condition differential amplifier function as a switch

Posted: Thu Jul 14, 2022 9:51 am
by answerhappygod
a) 4VT < Vd < -4VT
b) -2VT ≤ Vd ≤ 2VT
c) 0 ≤ Vd < -4VT
d) 0 ≤ Vd ≤ 2VT