All Questions
8
questions
2
votes
3
answers
573
views
Formula for calculating capacitor balance resistor values
The following formula is generally used for calculating balance resistor values used for overvoltage protection of capacitors in series when the individual capacitor voltage ratings are below the ...
- 206
5
votes
2
answers
805
views
Voltage drop due to leakage current in capacitors in series
When capacitors are connected in series in a DC circuit, the voltage drop across individual capacitors at and immediately after the initial charging period is inversely proportional to the individual ...
- 206
1
vote
2
answers
964
views
What capacitor value should I use for 3.3v from a buck converter IC?
I am relatively new to electronics and trying to design a buck converter circuit using the XL1509-ADJE1. The datasheet specifies that for the adjustable versions (which this is) you should use ...
- 15
0
votes
0
answers
127
views
Capacitor Lifetime
Can anyone some sample calculation on how to calculate the lifetime on an Aluminum Electrolytic capacitor who's Endurance value (Assumed as Lifetime value is 2000 hours at 105degC).
The manufacturer ...
user220456
1
vote
3
answers
4k
views
Capacitor max safe operating voltage
I'm currently making a power supply with a 32 volt AC out, so the rectified voltage would be 32*1.414-diode drop. The value comes around 44 volts. My question is, is it okay to hook up a 50 V rated ...
2
votes
1
answer
220
views
Using a higher C than necessary in a voltage regulator circuit
I've two questions:
If I've a voltage regulator that says in the datasheet to use electrolytic capacitors is it possible to use 'normal' capacitors with the same capacitance?
I've the circuit drawn ...
- 21
0
votes
1
answer
140
views
Are capacitor voltage ratings for max charge or exposed source?
If I have a 100V rated capacitor, can I expose it to a 200V source as long as I cut off the source before the the capacitor is fully charged? For example remove the 200V source when the capacitor ...
- 155
8
votes
2
answers
12k
views
Why does an ideal capacitor give rise to a rectangular cyclic voltammogram (CV)?
Many scientists are interested in developing supercapacitors, which have electrolyte rather than solid dielectric between the charged plates. In the field of electrochemistry, cyclic voltammetry (CV) ...
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