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Questions tagged [ripple]

Small unwanted residual periodic variation of a direct current (dc) output.

2 votes
1 answer
232 views

How does one compute the ripple currents seen by an active PFC output capacitor?

Suppose one is designing a single-phase power-factor-corrected power supply, with a known average current load: The ripple current seen by the output capacitor is critical. If that current is too ...
Stephen Collings's user avatar
7 votes
3 answers
112k views

Full-wave bridge rectifier with capacitor filter and ripple voltage

According to various sources, the ripple voltage of a full-wave bridge rectifier is $$ V_r = \frac{V_s}{2}fCR $$ where \$V_s\$ is the peak of the input voltage source, \$f\$ is the frequency, \$C\$ ...
Douglas Edward's user avatar
3 votes
2 answers
642 views

Getting rid of ripple from an LCD backlight

I have built a circuit which contains an integrated power supply stepping down mains voltage to 5v through a transformer, rectifier circuit and a voltage regulator. With a couple of smoothing caps the ...
Hoppo's user avatar
  • 417
2 votes
1 answer
5k views

How does one compute the ripple currents seen by a boost converter output capacitor?

Suppose one is designing a boost converter, with a known maximum current load, and a known inductance: The ripple current seen by the output capacitor is critical. If that current is too high, the ...
Stephen Collings's user avatar

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