All Questions
Tagged with electrolytic-capacitor power-electronics
10
questions
1
vote
1
answer
205
views
EMI filter attenuation requirement for a buck converter given EMI compliant AC-DC converter
In my application I have an off the shelf 600W 72V AC-DC converter that generates the main DC bus that powers a custom board that houses a 72V input, 9A output buck converter switching at 330kHz. A ...
- 35
0
votes
1
answer
102
views
What is the effect of the dc link capacitor "rated ripple current" on the drain current of switching elements?
While using a capacitor with 2.3A rated ripple current as a dc link capacitor in the circuit (as shown in the picture below "Cd") I used, I replaced it with one with 2.8A rated ripple ...
- 21
0
votes
1
answer
217
views
ESR of aluminum electrolytic capacitors [closed]
Is there any way to calculate the ESR of electrolytic capacitors for high frequencies?
In aluminum electrolytic capacitor datasheets, the dissipation factor is given with low frequency(100Hz-120Hz) ...
- 319
1
vote
1
answer
57
views
Is it safe to plug the connection end of a capacitor?
I need to put a capacitor between my motor power supply and ground cables, and have covered the connection with resin for safety. Is it safe to do this?
It's an aluminium electrolytic capacitor by ...
- 253
6
votes
3
answers
5k
views
Is it safe to use series polarized capacitors to form non-polarized capacitors to be used for higher rated voltage?
simulate this circuit – Schematic created using CircuitLab
It is known that we can use series capacitors to increase rated voltage. But I want to know how far we can push this feature to? ...
- 1,313
0
votes
1
answer
916
views
How to convert an AC volatge to DC using TRIAC?
I have just performed a phase angle control using triac and in which i want that ac voltage to be converted to DC.
I have used rectifier with triac and the output seems well.
But if i add a filter ...
1
vote
1
answer
507
views
Why are polarized capacitors are treated as non polarized in Clamping circuits?
This semester we studied clamping circuits, but there's rather strange happened when the professor was explaining the working of the circuit, he treated polarized caps as if they were non-polarized. I ...
2
votes
2
answers
4k
views
ESR in Electrolytic capacitor vs Voltage rating
I would like to know why in an electrolytic capacitor the ESR decreases as voltage rating increases.
And why the current rating increases as voltage rating increases.
Thank you.
- 79
1
vote
2
answers
6k
views
Can polarized capacitors be used for negative voltage generation?
simulate this circuit – Schematic created using CircuitLab
I want to use this circuit for charging, discharging and creating negative voltages off capacitors for a special application.
I will ...
- 1,313
10
votes
5
answers
14k
views
What happens if I connect a low voltage rated capacitor to a high voltage?
Given that c=q/v even if I connect it to a higher V, its charge Q may decrease proportionally right? So why should it damage my capacitor? or will the internal electric field get too high and cause ...
- 165