# Best way for forcing sharing between 2 series capacitors

Discussion in 'General Electronics Chat' started by karas, Oct 3, 2016.

1. ### karas Thread Starter Active Member

Sep 8, 2011
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What's the best way for forcing sharing between 2 series capacitors rather than add resistor in parallel with the capacitor. Another question if you have output of the power supply for example 10vdc and 1 a dc and switching frequency 60 kHz and ripple need to be less than or equal 1mv so what is the value of capacitance I need?

2. ### #12 Expert

Nov 30, 2010
17,889
9,298
What is the best way besides the best way? I'm going to need to see the circuit.
Post a schematic.

3. ### SLK001 Senior Member

Nov 29, 2011
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358
How would you share what goes thru two series capacitors? What do you mean by share? What goes thru one goes thru the other.

4. ### karas Thread Starter Active Member

Sep 8, 2011
158
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is my question is stupid or what is the wrong in my question? or you do not like my English? or what is wrong?

5. ### karas Thread Starter Active Member

Sep 8, 2011
158
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the voltage across the 2 capacitors is 800 vdc and each capacitor is 470uf and 450vdc , so I need to make sure that each capacitor has about 400vdc

6. ### SLK001 Senior Member

Nov 29, 2011
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358
If the two caps are the same value, then they will form a voltage divider with equal voltage drop across each.

7. ### karas Thread Starter Active Member

Sep 8, 2011
158
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the cap. has 10% tolerance

8. ### Brevor Active Member

Apr 9, 2011
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The best way is to add the two resistors across the caps like you said. I dont know of any other way.

Nov 12, 2008
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10. ### SLK001 Senior Member

Nov 29, 2011
1,029
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Then put one 15-20 watt 22kΩ resistor across each capacitor.

11. ### karas Thread Starter Active Member

Sep 8, 2011
158
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I need to avoid the dissipation on the resistor .do you think if we but zener it will work or may be one conduct first and scroe the balance