Bleeder resistors are used in power supplies:

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Question 1 of 270707ct3jBjqq0d55Ks1rfWG

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Question 1 of 27070

Bleeder resistors are used in power supplies:

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🔍 Key Concepts

• Bleeder resistor purpose in DC power supplies • Behavior of a filter capacitor when power is suddenly switched off • Difference between voltage regulation and safety/discharge functions

💭 Think About

• Think about what happens to the large filter capacitor in a power supply if there were no bleeder resistor after you switch the power off. What risk or behavior might that cause? • Consider whether a permanently connected resistor across the output is an efficient way to improve load regulation, or if regulation is usually handled by other circuit elements. • Ask yourself: is the bleeder resistor mainly about stabilizing voltage under varying load, or about ensuring the supply is safe and fully discharged after shutdown?

✅ Before You Answer

• Verify the primary safety function of a bleeder resistor in power supplies. • Check how output voltage regulation is normally achieved in regulated supplies (e.g., feedback circuits, voltage regulators) rather than by simple resistors across the output. • Confirm what a resistor permanently connected across a capacitor will do to the capacitor’s charge when input power is removed.

Question 1 of 27070

Bleeder resistors are used in power supplies:

To improve the output voltage regulation

They also discharge the filter capacitor when the power is turned off

Either A or B

None of the above

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Question 1 / 270707ct3jBjqq0d55Ks1rfWG

Question 1 of 270707ct3jBjqq0d55Ks1rfWG

Bleeder resistors are used in power supplies:

Back

Question 1 of 27070

Bleeder resistors are used in power supplies:

If the question has a related picture, it will appear here.