Capacitors in series???

Magura · 28th March 2004, 12:00 AM

I have a handfull of caps thats rated 40V. Now id like to run 60V rails, can i couple 2 of them in series and get the equalent of a 80V cap with twice the ESR ??

Cheers

Magura

till · 28th March 2004, 12:03 AM

you will get some double voltage half capacitance caps. So if you want double voltage and same capacitance you need to parallel two of the two in series caps and thus need four.

Magura · 28th March 2004, 12:10 AM

Thanks.

Magura

electronaut · 28th March 2004, 01:20 AM

Isn't it important to parallel the series caps with resistors to properly split the load? I read that somewhere once... Otherwise the top cap sees most of the voltage and still runs the risk of operating beyond its rating.

Or something like that.javascript:smilie('

')

-RobRoy

Magura · 28th March 2004, 02:01 PM

To couple caps in series seems to all in all being a bad idea

Magura

28th March 2004, 12:00 AM	#1
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	Capacitors in series??? I have a handfull of caps thats rated 40V. Now id like to run 60V rails, can i couple 2 of them in series and get the equalent of a 80V cap with twice the ESR ?? Cheers Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

28th March 2004, 12:10 AM	#3
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	Thanks. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

28th March 2004, 01:20 AM	#4
electronaut diyAudio Member Join Date: Jan 2004 Location: Chicago	Isn't it important to parallel the series caps with resistors to properly split the load? I read that somewhere once... Otherwise the top cap sees most of the voltage and still runs the risk of operating beyond its rating. Or something like that.javascript:smilie('') -RobRoy __________________ 'You know you've achieved perfection in design, not when you have nothing more to add, but when you have nothing more to take away.' -- Antoine de Saint Exupery

28th March 2004, 02:01 PM	#5
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	To couple caps in series seems to all in all being a bad idea Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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28th March 2004, 12:03 AM	#2
till Banned Join Date: Apr 2002 Location: Germany, Clausthal	you will get some double voltage half capacitance caps. So if you want double voltage and same capacitance you need to parallel two of the two in series caps and thus need four.

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