Cap bank question

Maz, Wed May 24 2006, 01:03AM

alright quick question, i have 24 330V caps @ 120uF ea. now, if i would try to get 660v i could series two halves then paralell the halves to achive the result? 2 12 cap banks paralelled.

if im wrong please let me know it!
Re: Cap bank question
Sulaiman, Wed May 24 2006, 01:10AM

12 capacitors in parallel

in series with

12 capacitors in parallel.

Assuming they're photoflash capacitors
the leakage currents need to be balanced.
I suggest 1 mA per capacitor.
e.g. 12 capacitors in parallel = 12 mA
330V/12mA=27,500 Ohms, 3.96W
Use a 10W 27kOhm resistor across each bank of 12 capacitors.
(2 total)
or a 0.5W 330 kOhm resistor across EACH capacitor.

P.S. Be careful, such a bank can deliver enormous/lethal power.
Re: Cap bank question
Bjørn, Wed May 24 2006, 01:17AM

Do as Sulaiman suggests.
Read this: http://www.oz.net/~coilgun/theory/capacitors2.htm
And this: http://wiki.4hv.org/index.php/Electrical_Safety

You also need to read the rules and adjust the picture in your signature accordingly.
Re: Cap bank question
Maz, Sun May 28 2006, 02:38PM

So basically i was correct, and i have found out that you guys are REALLY ANAL about sig size. i dont mind getting rid of it, but i had 3 PMs about it in two-three days. i had only had one before that.

im done with my small rant, and Bjørn your, and EastVoltResearch note were by far the nicest.
Jeez, Rupidust told me to go to hell...