Zener Diode (Zener Breakdown),Voltage Regulator
Semiconductor Electronics Material Devices and Simple Circuits

150946 The \(6 \mathrm{~V}\) Zener diode is shown in figure has negligible resistance and a knee current of 5 \(\mathrm{mA}\). The minimum value of \(\mathrm{R}\) (in \(\Omega\) ) so that the voltage across it does not fall below \(6 \mathrm{~V}\) is
original image

1 40
2 60
3 72
4 80
5 120
Semiconductor Electronics Material Devices and Simple Circuits

150947 In a Zener diode regulated power supply, unregulated DC input of \(10 \mathrm{~V}\) is applied. If the resistance \(\left(R_s\right)\) connected in series with a Zener diode is \(200 \Omega\) and the Zener voltage \(V_z=5 \mathrm{~V}\), the current across the resistance \(R_s\) is

1 \(15 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(20 \mathrm{~mA}\)
4 \(5 \mathrm{~mA}\)
5 \(25 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150948 In the following circuit, the current flowing through \(1 \mathrm{k} \Omega\) resistor is
original image

1 \(0 \mathrm{~mA}\)
2 \(5 \mathrm{~mA}\)
3 \(10 \mathrm{~mA}\)
4 \(15 \mathrm{~mA}\)
5 \(20 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150949 Consider the circuit, the current through the Zener diode is
original image

1 \(20 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(15 \mathrm{~mA}\)
4 \(40 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150946 The \(6 \mathrm{~V}\) Zener diode is shown in figure has negligible resistance and a knee current of 5 \(\mathrm{mA}\). The minimum value of \(\mathrm{R}\) (in \(\Omega\) ) so that the voltage across it does not fall below \(6 \mathrm{~V}\) is
original image

1 40
2 60
3 72
4 80
5 120
Semiconductor Electronics Material Devices and Simple Circuits

150947 In a Zener diode regulated power supply, unregulated DC input of \(10 \mathrm{~V}\) is applied. If the resistance \(\left(R_s\right)\) connected in series with a Zener diode is \(200 \Omega\) and the Zener voltage \(V_z=5 \mathrm{~V}\), the current across the resistance \(R_s\) is

1 \(15 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(20 \mathrm{~mA}\)
4 \(5 \mathrm{~mA}\)
5 \(25 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150948 In the following circuit, the current flowing through \(1 \mathrm{k} \Omega\) resistor is
original image

1 \(0 \mathrm{~mA}\)
2 \(5 \mathrm{~mA}\)
3 \(10 \mathrm{~mA}\)
4 \(15 \mathrm{~mA}\)
5 \(20 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150949 Consider the circuit, the current through the Zener diode is
original image

1 \(20 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(15 \mathrm{~mA}\)
4 \(40 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150946 The \(6 \mathrm{~V}\) Zener diode is shown in figure has negligible resistance and a knee current of 5 \(\mathrm{mA}\). The minimum value of \(\mathrm{R}\) (in \(\Omega\) ) so that the voltage across it does not fall below \(6 \mathrm{~V}\) is
original image

1 40
2 60
3 72
4 80
5 120
Semiconductor Electronics Material Devices and Simple Circuits

150947 In a Zener diode regulated power supply, unregulated DC input of \(10 \mathrm{~V}\) is applied. If the resistance \(\left(R_s\right)\) connected in series with a Zener diode is \(200 \Omega\) and the Zener voltage \(V_z=5 \mathrm{~V}\), the current across the resistance \(R_s\) is

1 \(15 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(20 \mathrm{~mA}\)
4 \(5 \mathrm{~mA}\)
5 \(25 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150948 In the following circuit, the current flowing through \(1 \mathrm{k} \Omega\) resistor is
original image

1 \(0 \mathrm{~mA}\)
2 \(5 \mathrm{~mA}\)
3 \(10 \mathrm{~mA}\)
4 \(15 \mathrm{~mA}\)
5 \(20 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150949 Consider the circuit, the current through the Zener diode is
original image

1 \(20 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(15 \mathrm{~mA}\)
4 \(40 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150946 The \(6 \mathrm{~V}\) Zener diode is shown in figure has negligible resistance and a knee current of 5 \(\mathrm{mA}\). The minimum value of \(\mathrm{R}\) (in \(\Omega\) ) so that the voltage across it does not fall below \(6 \mathrm{~V}\) is
original image

1 40
2 60
3 72
4 80
5 120
Semiconductor Electronics Material Devices and Simple Circuits

150947 In a Zener diode regulated power supply, unregulated DC input of \(10 \mathrm{~V}\) is applied. If the resistance \(\left(R_s\right)\) connected in series with a Zener diode is \(200 \Omega\) and the Zener voltage \(V_z=5 \mathrm{~V}\), the current across the resistance \(R_s\) is

1 \(15 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(20 \mathrm{~mA}\)
4 \(5 \mathrm{~mA}\)
5 \(25 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150948 In the following circuit, the current flowing through \(1 \mathrm{k} \Omega\) resistor is
original image

1 \(0 \mathrm{~mA}\)
2 \(5 \mathrm{~mA}\)
3 \(10 \mathrm{~mA}\)
4 \(15 \mathrm{~mA}\)
5 \(20 \mathrm{~mA}\)
Semiconductor Electronics Material Devices and Simple Circuits

150949 Consider the circuit, the current through the Zener diode is
original image

1 \(20 \mathrm{~mA}\)
2 \(10 \mathrm{~mA}\)
3 \(15 \mathrm{~mA}\)
4 \(40 \mathrm{~mA}\)