Question

Q5(a) Figure Q5(a) shows a basic series voltage regulator circuit. (i) Vin Rref + U1 D1 Figure Q5(a) Vout Q1 20?? 20?? Calculate the output voltage, $V_{OUT}$ if the $V_{IN} = +25$ V DC supply and the Zener diode $D_1 = 6.2$ V. (3 marks) Illustrate the modification for short circuit/overload protection between transistor $Q_1$ and the load by providing a sketched schematic. (5 marks) (iii) Calculate the short circuit/overload current to the load $I_L(max)$.

          Q5(a) Figure Q5(a) shows a basic series voltage regulator circuit.
(i)
Vin
Rref
+ 
U1
D1
Figure Q5(a)
Vout
Q1
20??
20??
Calculate the output voltage, $V_{OUT}$ if the $V_{IN} = +25$ V DC supply and
the Zener diode $D_1 = 6.2$ V.
(3 marks)
Illustrate the modification for short circuit/overload protection between
transistor $Q_1$ and the load by providing a sketched schematic.
(5 marks)
(iii) Calculate the short circuit/overload current to the load $I_L(max)$.

Q5(a) Figure Q5(a) shows a basic series voltage regulator circuit.
(i)
Vin
Rref
+
U1
D1
Figure Q5(a)
Vout
Q1
20??
20??
Calculate the output voltage, VOUT if the VIN = +25 V DC supply and
the Zener diode D1 = 6.2 V.
(3 marks)
Illustrate the modification for short circuit/overload protection between
transistor Q1 and the load by providing a sketched schematic.
(5 marks)
(iii) Calculate the short circuit/overload current to the load IL(max).

Added by Teresa R.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Gokul R Nair

Step 1

The output voltage, Vout, can be calculated using the formula: Vout = Vin - Vz where Vin is the input voltage and Vz is the voltage drop across the Zener diode. Given that Vin = +25 V DC and Vz = 6.2 V, we can substitute these values into the formula: Vout = Show more…

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Q5(a) Figure Q5(a) shows a basic series voltage regulator circuit. Vin Vout Rref Q1 D1 20kÎ© 20kÎ© Figure Q5(a) (i) Calculate the output voltage, Vout if the Vin = +25 V DC supply and the Zener diode D = 6.2 V. (3 marks) (ii) Illustrate the modification for short circuit/overload protection between transistor Q1 and the load by providing a sketched schematic. (5 marks) (iii) Calculate the short circuit/overload current to the load It(max).