Skip to main content
Electrical Engineering

Questions tagged [ripple-current]

Ask Question

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

44 questions
Newest Active Bountied Unanswered
0 votes
1 answer
127 views

Have here power supply for laser machine, on tag is written 50000 V 40 mA 2000 W. Inside are capacitors with name WUXINDA ELECTRONICS KMQ 105°C 250 V 2200 uF and 450 V 680 uF. Did not manage to find ...
Peter Novotny's user avatar
  • 51
1 vote
1 answer
142 views

I am designing a Vienna rectifier as a first boost stage in a lead-accid charging station. The input voltage to the system is 110 V L-L, and peak power is around 18,5 kW. I have succesfully simulated ...
miha medved's user avatar
  • 123
1 vote
2 answers
290 views

I have to design a PFC circuit which has an output power of 550 W with DC output of 400V. I have calculated the capacitance value as per my hold up and ripple voltage requirements but I am confused ...
itchymack's user avatar
  • 29
11 votes
4 answers
717 views

I notice that manufacturers don't tend to publish ripple current limits or dissipation factors for C0G capacitors in shunt operation like you'll see more commonly with class 2 dielectrics (X5R, X7R, ...
Polynomial's user avatar
  • 11.9k
-1 votes
1 answer
126 views

I am trying to design the power stage for a 48 V 10 kW traction inverter with a 152 Arms current. I came across a great article to design the DC link capacitance here. Based on this, I can assume a ...
Syler's user avatar
  • 1
3 votes
3 answers
384 views

I've changed an 820 μF capacitor on the output of a 1.05 V linear regulator which feeds the PCH (Intel's Platform Controller Hub), or "southbridge", on a PC motherboard.    It's working fine ...
Deep Thought's user avatar
  • 265
0 votes
1 answer
224 views

I am choosing input capacitors for a buck regulator. According to the regulator and based on my design, the maximum ripple current will be 4.7A, which is based on the input and output voltage as well ...
Matty's user avatar
  • 429
1 vote
4 answers
3k views

I have an early to mid 2000's motherboard that I am trying to restore. It looks to be mostly in good condition but a blown radial electrolytic capacitor might be causing trouble. From the placement of ...
Zeno of Elea's user avatar
  • 21
1 vote
1 answer
759 views

I see coupled inductors are generally used in multi-phase design to take advantage of current ripple cancellation. What is really the advantage of coupled inductor in multi-output buck or multi-output ...
Dynamic_equilibrium's user avatar
  • 3,418
0 votes
1 answer
204 views

Can we use bulk electrolytic capacitors on the power rails of an IC? I know that we will use bulk capacitors in switching regulators at input. Can anyone explain why or why not and how to find ripple ...
Selva97's user avatar
  • 573
0 votes
1 answer
497 views

I intend to drive a DC motor through an H-Bridge with PWM Control. Therefore I'm using only NMOS powerfets to drive the bridge. However I'm facing an issue with the current at the MOS gates. As you ...
MCA's user avatar
  • 1
3 votes
1 answer
2k views

I have the following problem. MY ATTEMPT The switch-mode power supply looks like it's a boost converter. I found that the DC-transfer functions for the boost converter to be: \$\frac{V_C}{V_{in}}...
Carl's user avatar
  • 4,786
0 votes
0 answers
150 views

I am currently creating a test plan for an AC/DC converter (90VAC...264VAC -> 12VDC) I've been working on. Since the output electrolytic capacitors are of SMD type, I am trying to come up with ...
vtolentino's user avatar
  • 3,707
2 votes
2 answers
9k views

What does the "Ripple current" and the "Life (in Hours)" in electrolytic capacitors specifications mean? My intuition says it's the highest current it can handle and it can operate for that hours (...
MrBit's user avatar
  • 2,144
1 vote
3 answers
2k views

I found a presentation regarding SMPS and found this slide. I am not totally able to grasp the concept of the input and output ripple current. In the above image I have the following questions : I ...
user avatar

15 30 50 per page
1
2 3