LIC-VOLTAGE REFERENCE

Recall: What is the definition of a voltage reference?

• A component that regulates the voltage in a circuit
• A component that regulates the current in a circuit
• A component that provides a constant voltage
• A component that provides a variable voltage

Recall: What is the purpose of a voltage reference in a circuit?

• To provide a stable voltage
• To provide a variable voltage
• To increase the voltage
• To decrease the voltage

Analysis: How does a voltage reference maintain a constant voltage?

• By using a zener diode
• By using a bipolar junction transistor
• By using a metal-oxide-semiconductor field-effect transistor
• By using a thermistor

Analysis: What is the difference between a voltage reference and a voltage regulator?

• A voltage reference provides a constant voltage, while a voltage regulator provides a variable voltage
• A voltage reference provides a variable voltage, while a voltage regulator provides a constant voltage
• A voltage reference and a voltage regulator provide the same type of voltage
• A voltage reference is used in AC circuits, while a voltage regulator is used in DC circuits

Evaluation: What is the advantage of using a voltage reference over a fixed resistor in a circuit?

• A voltage reference provides a more stable voltage
• A voltage reference consumes less power
• A fixed resistor is more accurate
• A fixed resistor is less expensive

Synthesis: How can you improve the accuracy of a voltage reference?

• By using a more precise voltage reference
• By using a lower resistance
• By using a higher resistance
• By using a capacitor

Synthesis: How can you improve the stability of a voltage reference?

• By using a larger capacitor
• By using a smaller capacitor
• By using a higher resistance
• By using a lower resistance

Application: What is an example of a circuit that requires a voltage reference?

• A power supply circuit
• An audio amplifier circuit
• A digital logic circuit
• A radio frequency circuit

Evaluation: What is the disadvantage of using a voltage reference in a high-temperature environment?

• The voltage reference may become unstable
• The voltage reference may become less accurate
• The voltage reference may become more accurate
• The voltage reference may consume more power

Synthesis: How can you compensate for the temperature-related changes in a voltage reference?

• By using a temperature compensation circuit
• By using a more stable voltage reference
• By using a more accurate voltage reference
• By using a higher resistance