In this problem you will use and compare different piecewise linear models, for

Question

In this problem you will use and compare different piecewise linear models, for different values of Vs.

The Resistor is R = 5 kOhms

Model 1: (ideal diode)
Von = 0 volts (forward biased voltage)
Is = 0 A (reverse biased saturation current)
Model 2: (large signal)
Von = 0.5 volts (forward biased voltage)
Is = 0 A (reverse biased saturation current)
Model 3: (most accurate)
Von = 0.5 volts (forward biased voltage)
Is = 1 microA (reverse biased saturation current)

Recall thatvd= Vonwhen the diode isForward biased, andid= -Iswhen the diode isReverse biased.
Pay attention to units! voltages are in volts; currents are in mA. And make sure to use enough significant digits.

a)Solve the circut whenVs = 2 volts

Using Model 1: Id = _________ mA

Vd = _________ volts

Using Model 2: Id = _________ mA

Vd = _________ volts

Using Model 3: Id = _________ mA

Vd = _________ volts

b)Solve the circuit whenVs = -17 volts

Using Model 1: Id = _________ mA

Vd = _________ volts

Using Model 2: Id = _________ mA

Vd = _________ volts

Using Model 3: Id = _________ mA

Vd = _________ volts

Explanation / Answer

a) model 1 :: id = 2/5 = 0.4 m A

vd =0

model 2:: id = (2-0.5)/5 = 0.3 mA

vd =0.5 v

model 3:: id = (2-0.5)/5 = 0.3 mA

vd = 0.5 v

b) model 1 :: id =0 A

vd = 0

model 2:: id = 0

vd =0

model 3:: id = is= -1 micro A

vd = -17+ 0.005 v

= -17 v

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.