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Discharging Capacitor 

 

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 Post subject: Discharging Capacitor
Posted: Fri Apr 20, 2007 6:26 pm 
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does anyone know how i can get rid of the charge out of my capacitor. i am pulling all my gear out cause im selling my car.

does anyone know how to do it?

 

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Posted: Fri Apr 20, 2007 6:31 pm 
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goog is your friend:

"Discharging the Capacitor:
If you plan to remove your capacitor for any reason, you may want to completely discharge the capacitor to avoid a potential hazard. To discharge the capacitor (only after it's disconnected from the system, of course), will need to enable the current to flow from one terminal to the other. You can use either a test light or resistor for this purpose. Some large capacitors tend to develop a charge similar to a battery and will produce a small voltage across its terminals. Since, in a large capacitor (over .5 farad), even a small voltage could be dangerous. After it is discharged, you may want to connect the terminals together with a piece of wire or resistor. Even if the capacitor design doesn't permit it to develop adverse voltages when unused, leave the terminals connected as a visual confirmation of the unit's safety. "(http://www.electronixwarehouse.com/educ ... citors.htm)

 

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Posted: Fri Apr 20, 2007 6:52 pm 
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so u cant just disconnect the power and let it drain to earth?

 

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Posted: Fri Apr 20, 2007 8:03 pm 
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No, the potential difference is between the - and + on the cap. You need to discharge from one side to the other through a load, like a 12v light bulb or resistor (but be careful with a resistor as it'll get really hot.
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Posted: Fri Apr 20, 2007 8:04 pm 
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get hold of a 100 ohm resistor and connect it permanently across the terminals until you reinstall it.
An interior light globe will also be fine, you need to solder wires to each end though.
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Posted: Fri Apr 20, 2007 8:22 pm 
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its called Bleeding a Capacitor, as said above, Easiest way is to hook a load to the two Terminals, like a 12v torch
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Posted: Fri Apr 20, 2007 8:39 pm 
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what happened to the old screwdriver?

yes yes I know thats a no no... poor cap etc.

poor screwdriver too :/

 

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Posted: Fri Apr 20, 2007 8:40 pm 
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^^^^^ possibility it could f**k the Capacitor, and a decent Car audio Capacitor isnt something you want to be Blowing up
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Posted: Fri Apr 20, 2007 9:30 pm 
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im guessing the best way is to get a bulb with wires from supercheap. cant be that expensive

 

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Posted: Fri Apr 20, 2007 9:39 pm 
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A good way is to connect a wire to each terminal, best bare copper wire, and wind either one around each side of the toilet seat, approximateley where a butt cheek would sit.
Next time the wife goes for a crap, she makes the circuit, and the rest is priceless....
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Posted: Sat Apr 21, 2007 1:13 am 
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To discharge a cap its as easy as using either a normal 12 volt globe (5 to 20watt) or for a faster discharge use a halogen headlight globe. If using a resistor use the wire wound type as they wont explode as they are a higher wattage . Use a 1k or higher wire wound resistor (rectangular white ceramic type)
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Posted: Sat Apr 21, 2007 1:24 am 
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347stroker wrote:
A good way is to connect a wire to each terminal, best bare copper wire, and wind either one around each side of the toilet seat, approximateley where a butt cheek would sit.
Next time the wife goes for a crap, she makes the circuit, and the rest is priceless....



lol now thats funny :D
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Posted: Sat Apr 21, 2007 8:19 am 
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buns of steel?

 

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Posted: Sat Apr 21, 2007 1:36 pm 
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Krytox wrote:
buns of steel?


hehe yeh and a big s**t mess when she heaves out a grogan and her cheeks contract lol

 

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