4.6.2. Lab Exercise 2: Temperature Compensation of a Zener Diode Reference

Try these first

1. 1.

   What is the primary function of a Zener diode?

   Hint

   Think about how it behaves when connected to a power supply.

2. 2.

   What does temperature compensation do?

   Hint

   What happens to resistors and diodes when temperature changes?

3. 3.

   What is the primary purpose of a Zener diode in voltage reference circuits?

   • To amplify voltage
   • To regulate voltage
   • To filter noise

   Hint

   Think about where stable voltage is critical.

4. 4.

   True or False: Temperature compensation is performed to ensure Zener diodes maintain stability in varying temperature conditions.

   • True
   • False

   Hint

   Consider how temperature changes affect electronic components.

5. 5.

   Design a Zener voltage reference circuit that requires a temperature compensation for a specific application where temperature can range significantly.

   Hint

   Consider which elements might be sensitive to temperature changes.

6. 6.

   Using the given characteristics of a Zener diode, calculate the likely output voltage over specified temperature ranges and explain the effects of poor compensation.

   Hint

   Factor in variations indicated by the Zener voltage’s temperature coefficient.