Neglecting base currents and assuming the two transistors are identical, show that the value needed for RE in the circuit shown in Figure Q2d is given by: VT RE - VI in (re) where VT is thermal voltage, Iref is the reference current through R and Io the required output current. -Vcc V BE1 R I ref ald V. BE2 T1 Figure Q2d Ro 10 = 1c2 T2 RE VEE F Neglecting base currents and assuming the two transistors are identical, show that the value needed for RE in the circuit shown in Figure Q2d is given by: VT RE - VI in (re) where VT is thermal voltage, Iref is the reference current through R and Io the required output current. -Vcc V BE1 R I ref ald V. BE2 T1 Figure Q2d Ro Io = 1 c2 T2 RE VEE F