Consider the circuit depicted in the figure shown below. This circuit is designed using a silicon bipolar junction trans

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: Consider The Circuit Depicted In The Figure Shown Below This Circuit Is Designed Using A Silicon Bipolar Junction Trans 1 (37.78 KiB) Viewed 18 times

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: Consider The Circuit Depicted In The Figure Shown Below This Circuit Is Designed Using A Silicon Bipolar Junction Trans 3 (15.9 KiB) Viewed 18 times

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Consider the circuit depicted in the figure shown below. This circuit is designed using a silicon bipolar junction transistor (BJT) with a forward current gain BF, and two resistances Rc and Rg. The supply voltage is denoted as Voc. The voltages Vin and Vout designate the input and output voltages, respectively, whereas the currents Ib, Ic and le denote the base, collector, and emitter currents, respectively. VCC | Rc Vin Vout RE GND
Throughout this question, we will also be using the following notations: VBE designates the voltage between base and emitter, VBEon denotes the threshold voltage of the base-emitter junction. For a silicon BJT, we have V86,on 0.7 volt. Vce designate the voltage between collector and emitter. Vcerat denotes the value of Vce when the BJT is in the saturation mode. In ENG1004, we use Voe,out = 0.2 volt. a) Select, in the list below, the THREE general expressions that apply to this circuit. Note that a negative mark (-1) is given for a wrong selection Vcc - Rolo Vou = Reg Vout - Vin VBE + VCE Vout Vout Voc +RCIC O V = Vse + Rele OV=Rg. Vin = VRE - Rg Ig Vout = Vin - VbeVce
Assume that the BJT is in the cut-off mode. What is the expression of the output voltage Vout? O Vout = Vcc o Vout = Vcc - VCE,sat o Vout =Vcc - VBE.on o Vout= VCE.cat O Vout VBE, o Vout = VCE,nat - VBE,on o Voue = 0 o Vout = V86.com VCE.at
c) What is the condition that Vin must satisfy for the BJT to be in the cut-off mode? O Vin > VBE.com o Vin<VBE,om O Vin <Vcc - VBE,on O Vin > VCB.at O Vin > Vcc - VBE,on O Vin > VBE,on - VCE,at O Vin <VB6,0 - VCB. OV. <VCB, nat
d) Assume that the BJT is in the forward-active mode. What is the expression of the output voltage Vout? RC O VoutVcc - Br. - (Vin - VBE.on) o VoutVcc RE RE Rc (Vin-VBE.com) O Vout- Rc RE.(Vin VBE.on) O Vou Rc Rx (Vin VBE,on) ^ o Vout- -Be. RE - (Vin - VBE,on) Rc o Vout-Bp. - (Vin - Von) RE O VoutVcc - Bp. Re Re (Vin-VBE,on) O Vout Vcc Rc RE .(V. VB.)
2) Assume now that the BJT is in the saturation mode. What is the expression of the output voltage Vout? o Vorut = Vin + VBE,on + VCE, sat o Vout VBE,on - VCE.cat Vout= VBE,on + VCE,rat o Vout VCE aat o Vout Vin - VCE.sat o Vout = VBE.com Vout = Vin - VBE.+ VCE. o Vout = 0
What is the condition that Vin must satisfy for the BJT to be in the saturation mode? O Vin > VBE,on + Retro) (Voc - VCE, nat) O Vin VE.. + (Vcc - VCE,sat) Rs O Vin < + Rs. (Vcc - VCE,sat) o Vin <VnEon + RETRO -). (Vcc - VCE,at) Rc Rc VBE.on Rc RE O Vin <VBE,on + R + Rc Rc -). (Vcc - VCE,sat) O Vin > VBE,on + RE RR)(Vcc - Vonat) o Vin > VBE,on + Ro Rx (Vcc - VCE,at) O Vi > VBE,on + Rs. (Voc - VCER Rc