Discharging Farad Capacitor

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Djkthegame
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Discharging Farad Capacitor

Post by Djkthegame »

I got a single Sub and Amp powered directly from the Battery through a 1/2 farad capacitor which i no longer want as part of my system. I have been doing my own systems for 10 years but this is my first one with a cap. I still have the transistor it came with so how do i discharge the farad cap?
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Re: Discharging Farad Capacitor

Post by Shae »

Just unhook the power and let it sit, it will discharge it self within an hour, probably under 15 minutes, but an hour to be safe.
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Re: Discharging Farad Capacitor

Post by Wes »

The "proper" method is to short the negative terminal and the pos terminal ONLY with a resistor in between. I have only bought 2 caps before, and both came with the required resistor and instructions on how to charge and discharge.
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Re: Discharging Farad Capacitor

Post by gonzo4191 »

just about wes....

just take the negative terminal cable off and hold it to the positive post while it the positive cable is still attached.
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Djkthegame
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Re: Discharging Farad Capacitor

Post by Djkthegame »

well i already removed the cap, which i still need to discharge but i still have the resistor it originally came with. I pulled the fuse of the lead to the cap and unhooked the neg from the cap then i unhooked the pos from the cap and removed it.
Last edited by Djkthegame on Mon Mar 07, 2011 7:37 pm, edited 1 time in total.
"CERTIFIED BONNIEHOLIC"
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B II-2000 Bonneville SSEi (black) 7/3/09 ZZpcm 1.0, Thrasher Cold Air Intake, Magnaflow hi-flow cat, 180 thermostat, Autolite 104's, solid hockey puck front mount, Intense 3.4 MPS. (OCT 2010 COTM Nominee)
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Re: Discharging Farad Capacitor

Post by John Deere Boy »

I accidentally discharged a large capacitor once with a screwdriver...it was the last job that screwdriver ever saw.
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Re: Discharging Farad Capacitor

Post by 00Beast »

John Deere Boy wrote:I accidentally discharged a large capacitor once with a screwdriver...it was the last job that screwdriver ever saw.
I bet you had to go change your pants after that too!
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Re: Discharging Farad Capacitor

Post by Bugsi »

I once wired a commercial air conditioner's compressor capacitor backwards. When I turned it on, the cap exploded and shot about 30 feet into the air.

Yes, shorting a big cap with a screwdriver will discharge it. Quickly. And melt the screwdriver.

Just clip a (physically) large (electrically) small resistor across the terminals. If it came with one, just use that. Otherwise a $0.50 ceramic 10-ohm power resistor from Radio Shack will do fine.
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