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What is the function of a capacitor in a rectifier circuit?

Practice Questions

Q1
What is the function of a capacitor in a rectifier circuit?
  1. To increase current
  2. To filter out noise
  3. To store charge
  4. To convert AC to DC

Questions & Step-by-Step Solutions

What is the function of a capacitor in a rectifier circuit?
  • Step 1: Understand that a rectifier circuit converts alternating current (AC) to direct current (DC).
  • Step 2: Know that the output from a rectifier can be uneven or 'rippling'.
  • Step 3: Learn that a capacitor is a device that can store electrical energy.
  • Step 4: Realize that when the rectifier produces voltage, the capacitor charges up.
  • Step 5: When the voltage drops, the capacitor releases its stored energy to keep the output voltage more stable.
  • Step 6: Conclude that the capacitor helps to smooth out the fluctuations in the output voltage, making it more consistent.
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