Voltage Regulation Quiz

Calculate the voltage regulation of a power supply having VNL = 50 V and VFL = 48 V.

• 4.17%

• 5.2%

• 6.2%

• 7.1%

If the value of full-load voltage is the same as the no-load voltage, the voltage regulation calculated is _____ %, which is the best expected.

• 0

• 1

• 99

• 100

In a simple series regulator circuit, which of the following components is the controlling element?

• Load resistor

• Zener diode

• Transistor Q1

• op-amp

In this series regulator circuit, which of the following components is the sampling circuit?

• Zener diode

• Load resistor

• Either of the two transistors Q₁ or Q₂

• Resistors R₁ and R₂

In this op-amp series regulator circuit, which of the following components is the comparator circuit?

• Op-amp

• Transistor Q₁

• R₁ and R₂ resistors

• Zener diode

In a series regulator, which of the following components sets the reference voltage?

• Transistor Q₁

• Zener diode

• Transistor Q₂

• R_S

For what range of fixed regulated voltages do the series 78xx regulators provide regulation?

• +5 V to -24 V

• +5 V to +24 V

• -5 V to -24 V

• -5 V to +24 V

What is the typical dropout voltage for the 7812 fixed positive voltage regulator?

• 4 mV

• 100 mV

• 1.5 V

• 2 V

What is the range of the voltage level of the LM317 adjusted voltage regulator?

• 0 V to 5 V

• 1.2 V to 37 V

• -5 V to -24 V

• 5 V to 24 V

The 7812 regulator IC provides _____.

• +5 V

• -5 V

• +12 V

• -12 V