Practice 78XX Series - 4.1 | Semiconductor Devices and Applications | Basic Electronics Engineering
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the output voltage of the 7805?

πŸ’‘ Hint: Think of the number indicated in the model.

Question 2

Easy

What kind of devices often use 78XX series regulators?

πŸ’‘ Hint: Consider which devices need stable power.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What output voltage does the 7805 provide?

  • 12V
  • 9V
  • 5V

πŸ’‘ Hint: Think of the model number.

Question 2

True or False: The 7812 outputs 5 volts.

  • True
  • False

πŸ’‘ Hint: Recall the output specifications.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a simple power supply circuit using both a 7805 and a 7812 to power a microcontroller and a sensor. Explain how the output can be stabilized.

πŸ’‘ Hint: Consider how each part of your circuit requires different voltage levels.

Question 2

If a load connected to the 7805 requires 500 mA and the input voltage is 12V, calculate the power dissipation in the regulator and discuss heat management strategies.

πŸ’‘ Hint: Think about how heat is generated and how it can be dissipated.

Challenge and get performance evaluation