• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

charging capacitors

Status
Not open for further replies.

matthew47

New Member
I have a question, how can i chargw up my capacitor to full? I tried simply connecting it to a battery and that didn't work because I think it only charged to the battery's power level, when it should go to 400 v. Do I have to put a resistor in series when charging or what?
 

Roff

Well-Known Member
A capacitor will only charge to the voltage of the battery you connect it to. The voltage rating - 400 volts in your case - indicates the maximum safe voltage you can charge your capacitor to. If you try to charge it to a higher voltage, the capacitor may be damaged.
With large-valued capacitors and batteries with high current capability, you should put a resistor in series to limit the peak current. Otherwise, you can get arcing and accompanying hot metal splatter.
 

matthew47

New Member
so you're saying that i cannot do anything unless i find a 400 v source?

Oh, wait, how would i convert the voltage from a wall plugin to DC instead of AC?
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top