Why do I get zapped when getting out of the car?

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Belvedere

Junior Member
Oct 19, 2001
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dude, i lurk on anandtech alot, and you guys know alot about my comp problems, etc. but y'all dont know jack about physics.

you cant ground yourself by stepping on the ground, i am assuming you are wearing shoes--normal shoes with that stuff on the bottom, you know rubber, the insulator. that charge is created from driving! the friction of the air on your car creates a difference between the car's charge and your body's charge. when you touch your car's EXTERIOR metal(this is important) you get shocked cuz the charge moves from the car to you to EQUALIZE. this means you are likely to get another charge when touching another object immediately. cuz you also have a higher charge relative to non charged items now. this will dissipate with time or if you touch something that is grounded.

btw, the explanation of the lightning thing IS TRUE. and that is not because your car is not grounded. it actually get charged like crazy. charges travel on surfaces, so the outside of your car is gonna be charged, but being inside your car you should be ok.

bottom line, that frizzy haired guy with the paperclips dragging along? thats me. remember, charges travel based on gradients, meaning if you get shocked, there is a high likelyhood of getting shocked again unless you ground yourself (i like to touch the screws on light switch boxes, which are grounded).

ok. feeling better now.
 

Doggiedog

Lifer
Aug 17, 2000
12,780
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Wouldn't you then just postpone the shock until you got to the front door...or the next metal object?

Exactly, that's why I just take the pain upfront and touch the keys to the door lock. I'm glad to have gotten rid of that car though. My new car doesn't do it.
 

rh71

No Lifer
Aug 28, 2001
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I have this problem all the time, even when it's not winter. I've tried all the workarounds like using the key first, touching the car while stepping out to the ground, etc. etc. Nothing works 100% for me...

So I simply pound on the door with the BOTTOM of my closed hand (fist) first (and hear a small shock, but not feel it)... That's better than a shock anyday. I get so paranoid that I pound or swipe at door handles to stores, etc. too... just one of things I've had to live with.

Still, I can't figure out why people look at me funny... ;)
 

GreenGhost

Golden Member
Oct 11, 1999
1,272
1
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The cure could come from a good design: my old '92 Mazda has a rubber button in the interior part of the door, just below the window. You touch it when you leave the car and you don't get the shock anymore. With time, you do it automatically, without thinking.

Now, why don't all cars have something like that??? Everybody who rides in my car asks me what that button is for (it say "touch" on it). I don't think it's a popular idea, but works very well, and it would be very easy to install it in any car. Maybe I should start manufacturing it, get some testimonials, launch some infomercias, get rich, but I'm too lazy.

I always get zapped when I drive my wife's Oldsmobile.

 

Sir Fredrick

Guest
Oct 14, 1999
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<<

<< It's more than just touching metal. You could touch a quarter all day and you'd still get shocked when you touched the door...it's really more or less touching grounded metal. >>



Obviously you didn't get what I was saying. When your feet touch the ground, and you make contact with the car's metal, you're making the bridge that lets the difference in charges between the car and the the ground equalize. If you use a key to touch the metal, you won't feel the shock as much.
>>



Actually I was responding to someone else's post, not yours...someone made a comment about just making sure to touch metal first. Sorry I wasn't more clear. :)
 

Antisocial Virge

Diamond Member
Dec 13, 1999
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Those straps might be a good idea. They make it a little safer when filling up on gas when a car is prone to do that.
 

flot

Diamond Member
Feb 24, 2000
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I'm pretty sure I've heard that cheap tires makes it worse. Something about the materials used...

Note: When I say cheap tires, I mean "long life" tires. My rental car shocks me every freakin time I get out of it. My sports car, as far as I can recall, has never shocked me. Then again, cloth seats vs leather seats and plenty of other differences, so you be the judge.
 

erikiksaz

Diamond Member
Nov 3, 1999
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I just either use my foot (with shoes on of course :p), or rear end to close the door.

I don't think i've felt any zaps on my booty so far, i'm pretty sure it wouldn't hurt THAT much anyways, compared to your hand getting zapped.
 

Bobomatic

Senior member
Dec 31, 2001
514
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Well if it is because of cloth seats I propose that you go the stylish route and get the bead covers for your seats.
 

joshg

Golden Member
Jul 3, 2001
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yeah I noticed this too in my car... I can go out all day and get shocked every time, whereas my fiance riding in the passenger seat never gets shocked... I don't understand that part of it...

anyway as I resolve I just started closing the door by pushing the window instead of the frame of the door... no more shocky :D
 

Doggiedog

Lifer
Aug 17, 2000
12,780
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I get so paranoid that I pound or swipe at door handles to stores, etc. too... just one of things I've had to live with.

That is soo funny because I thought I was the only guy with that phobia. I don't know what they call it but I'm terrified of static electricity. I think it may have to do with nearly getting killed by electrocution when I was a kid.
 

SKORPI0

Lifer
Jan 18, 2000
18,485
2,419
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Thanks for all the tips on how to avoid being zapped!. And to think it was just happening to me. :Q BTW, I have leather seats so having cloth seats may not be a factor. Thinking about installing those paperclips! ;)
 

Pastore

Diamond Member
Feb 9, 2000
9,728
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my gf just got a new coat and it is very staticy so whenever she touches something now she gets shocked... i lmao and she almost cries... its funny
 

surd615

Member
Feb 29, 2000
161
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I get zapped all the time - even indoors when I try to open a door, especially on of the metal doors in offices. :disgust:
I have gotten into the habit of touching the door knob with my watch strap (which is metal) before I open it.

For cars, I use the same trick that others have mentioned - of putting my hand on the door frame as I'm getting out.