This site uses cookies. By continuing, your consent is assumed. Learn more


Can you hook up a capacitor backwards


By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. I have a uF capacitor rated for 50V. When I connected it to my circuit I put it in the wrong way. After a few seconds I realized my mistake and switch off the circuit.

Add Your Answer

I want to know if any damage have been done to the capacitor. It is not bulging and it did not explode. Edit it is applied to a 13v 10 amp max supply. It is a aluminum Electrolytic capacitor Panasonic. You didn't say what technology the capacitor is, but considering it's 6.

Yes, the capacitor has gotten damaged, at least somewhat. How badly damaged, and how irreversible the damage depends on what voltage was applied for how long. A 50 V capacitor can probably take 5 V in reverse for a few seconds, and probably mostly recover when promptly forward biased. The prognosis gets worse at higher voltage and longer time.

I just don't want to...

The insulating layer formed on the surface of the aluminum gets eaten away, so eventually there is a short. You have already damaged the insulating layer somewhat. It can actually heal somewhat when forward voltage is applied, so it's hard to say how bad the damage is. If this is a commercial application, toss the capacitor, replace it with a new one, and don't look back.

If this is a hobby application where you can tolerate the capacitor blowing up or leaking in the future, then continue on and be more careful next Can you hook up a capacitor backwards. I wouldn't use it even in a hobby application. I had a near miss accident with a smaller cap blowing up on the table, perhaps some ten inches from where my head was. The case of the capacitor flew off and got stuck in a plastic ceiling panel.

If it's in a protected environment Your application has some kind of protective case I'd definitely use it.

If you have a start...

I know it's a thrilling experience being beside a cap that can blow up in any moment, but it won't be that fun if it ends up in your eye socket: By clicking "Post Your Answer", you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Home Questions Tags Users Unanswered.

But don't do it with...

"Can you hook up a capacitor backwards" What happens if you put a capacitor in the wrong direction for a short time? PlasmaHH, in few seconds only???

We have no idea how exactly it was connected and how much voltage and current it got, but in a given situation like yours, there were a lot of caps that have been damaged or even exploded. A lot of damage can not be seen, but only measured e.

I agree with that I'm thinking about testing it by measuring its leakage current and healing the oxide dielectric, if need be. How about posting the data sheet or a link to it, please? To paraphrase Dirty Harry: Well do you, punk? Olin Lathrop k 29 I agree, as a cheapskate hobbyist, continue using it, but mark it with something and when you're done, put it in the box of components labeled "Hmm That cap you may have damaged is nearly not as expensive as to justify the risk.

If this is a hobby...

The design of capacitors seems to have changed at some point. Old capacitors would blow their entire case off, modern ones just seem to rupture. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Your Answer

Post as a guest Name. Post Your Answer Discard By clicking "Post Your Answer", you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Is it possible to wire a Can you hook up a capacitor backwards backwards? In a DC circuit, some capacitors can be wired backwards, others cannot. is de-energized, but binds up when power is applied, it's because the rotor is not centered in the stator.

But don't do it with a cheapo non-vented one or you could put your eye out. email address out of your signature, that'll be sniffed up faster than you can say " spam". I connected a small electrolytic cap backwards once. It. I just don't want to hook this thing up backwards because I'm afraid of blowing up.

Also, do I have to be careful handling the capacitor-I know that they can store.

MORE: Bgr hookup simulator ariane tips and toes

MORE: American singles logo

MORE: Adult hookup login

News feed