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Electric Shock from Car Door

07/07/2009 2:57 AM

Dear All,

I have experience of when 'Not in good mood' or with sad feeling drive with my 20yrs old car. When i open car door (metal handle) i wll get a electric shock and sometime can heard spark sound. No matter sunny or rainning day.

But during in happy day this abnormal pheonamen never happen , what is the reasons , pls advise.

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#1

Re: Body charge in automotive

07/07/2009 3:31 AM

The vehicle body is becoming charged as a direct result of the interaction between tyre and road.

One solution is to fit one of those earthing straps to the underside of the vehicle. At intervals the tip of the strap touches the road, discharging the static electricity build-up. Claims about their effectiveness vary. It is important to check the strap at intervals to make sure that it hasn't worn away, thereby reducing its effectiveness.

If the engine is petrol, it is especially important to earth the vehicle at petrol stations before bringing the nozzle into contact with the filler cap, and this can be as simple as using one's body to discharge it on getting out. The risk is low, however it is not unknown for a static spark between the filler nozzle and the vehicle body to ignite the fuel being dispensed.

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#11
In reply to #1

Re: Body charge in automotive

07/08/2009 4:35 AM

Why are those earthing straps all stiff and rubbing against the ground all the time. Surely it would be easy to put a "hinge" near the top and make the "body" wide enough so that it "flies" up when the car is doing more than say 5 mph, and, falls back down again when the car stops. That way you could make better contact when stopped and not wear the things out so quickly.

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#16
In reply to #1

Re: Body charge in automotive

07/08/2009 8:49 AM

The strap should be adjusted to only just contact the street when unloaded and stopped. When driving the air moving past should allow it to fly up and not be worn away......check it once a month at first.......if it wears quickly add a wider piece of plastic to cause it to "fly up" quicker/at lower speeds....

It only needs to contact the road when the car is stopped......

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#2

Re: Body charge in automotive

07/07/2009 4:32 AM

Negative emotions must cause a negative charge.

Click on the and choose a happy one .

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#3

Re: Electric Shock from Car Door

07/07/2009 11:18 PM

The static discharge can also result form clothing rubbing on the seat as you exit the car. Women especialy have this problem with wearing panty hose. And yes it has caused fires at gasoline station. Been known since the 30's.....

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#8
In reply to #3

Re: Electric Shock from Car Door

07/08/2009 2:21 AM

Synthetic clothing ( panty hoses included ) are more prone to generating static discharges, particularly in cold & dry conditions on dry skin. So to avoid this issue, moisturising is reqd.

Ashok Toshniwal, Bangalore, India

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#4

Re: Electric Shock from Car Door

07/07/2009 11:30 PM

Dear ALL,

Every one's opinion is right, it is purely because of Static energy, It may happen In any area at any time, high in damping atmosphere. it can happen between any conduction bodies.(metal to human, human to human) only solution is to discharge.

I have an experience, when i try to shake hand my fried, i heard a sound and small spark between out hand before experiencing small shock.

avoid silk/polythin, try to earth vehicle under sun light. do not afraid of good/bad mood. scycology will come in to ficture.

Good luck

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#5

Re: Electric Shock from Car Door

07/08/2009 12:30 AM

If you want to avoid the shock, place your hand on metal parts of the body and keep it there until you exit, close the door and then walk away.

I have a significant problem with static electricity (especially during the winter months) and must do this to keep from getting shocked when exiting my car.

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#6

Re: Electric Shock from Car Door

07/08/2009 1:06 AM

Hello Aikhh,

I only have 3 simple recommendations:

1. Make sure proper grounding connected to your old car door.

2. Change your metal door handle into plastic or non resistive material.

3. MOST important thing is " be always happy when you get to your car" as you claimed "But during in happy day this abnormal pheonamen never happen". BE HAPPY, NO WORRY, BE HAPPY!!

Kind regards

Roman

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#7

Re: Electric Shock from Car Door

07/08/2009 1:11 AM

You were either abducted and have a transmitter in your body from some freaking aline from another world... Or you have a hot wire grounding out and perhaps when you are angry you simply sense the shock more because you are grounding your metaphysical sense of well being (I dunno, ask an Obama supporter)... and the charge hits you full force.

On happy days, it feels good because you really like the shocking feeling deep down in your psyche.

Like I said (or maybe not) I could be wrong.

JL Mealer
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#9
In reply to #7

Re: Electric Shock from Car Door

07/08/2009 2:59 AM

or a freaking alien... they cause typos when they are active!

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#10

Re: Electric Shock from Car Door

07/08/2009 3:45 AM

Grounding your door to the (-) of the battery/car chassis, will help.

I don't like the earth stirp rubbing on against the floor as that can lead to attract your car to positive charges during a thunderstorm...but this would be a very unlucky event.

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#14
In reply to #10

Re: Electric Shock from Car Door

07/08/2009 8:41 AM

And very unlikely to happen "attract your car to positive charges during a thunderstorm..." his car would need to be taller than a tree.

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#12

Re: Electric Shock from Car Door

07/08/2009 8:00 AM

I had a custom van that I occaisionally recieved a shock from. The mechanics kept telling me it was static electricity. It had a little too much kick. A few years later we were doing some work and found a wire nut off some electrical wires. Every once in a while the wires would bounce into the right place and touch the metal thus giving me a shock. This happened after the van was about 8 plus years old and took 5 years too find. Just a thought

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#15
In reply to #12

Re: Electric Shock from Car Door

07/08/2009 8:46 AM

Before anyone tells you that 12VDC can't be felt by you, which is true and everybody knows, let me tell you that a loose end of a 12 VDC relay coil will give a kick well above 100 Volts, try activating the horn relay by closing and opening the contact with bare hands and in contact with the copper wire.

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#13

Re: Electric Shock from Car Door

07/08/2009 8:03 AM

I have experienced similar effects. I reasoned that it was the vehicle moving through the air (plastic panels on the exterior of the car) at a high rate of speed that causes the static build up.

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#17

Re: Electric Shock from Car Door

07/08/2009 8:58 AM

Well, the reason is static electricity.

When you're not being yourself, everything bothers you, you notice even the slightest wrong thing, you become "picky".

When you're back to your normal state, you don't even notice those discharges or you forget'em the second after, or you find them funy or even like them.

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#18

Re: Electric Shock from Car Door

07/08/2009 9:47 AM

There is also the psychological factor. When things are going your way and your happy, it takes more of an intrusion to burst your happy bubble. Conversely, when having a bad day the slightest irritant will get noticed. So the OP is likely not noticing all of the static discharges when in a good mood.

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#19

Re: Electric Shock from Car Door

07/08/2009 10:12 AM

aikhh,

I believe we have consensus regarding the facts that the shock that you feel is static electricity. You have recieved plenty of advice on how to deal with this static electricity.

However, with the possible exception of redfred, noone has responded with an explanation to your question of why you get the shock when you are "Not in good mood or with sad feeling" but not "during happy day."

So I will try to answer your "restated" Question.

Question, "Why do I feel the static electricity, regardless of rainy / sunny day, depending on whether or not I feel sad or happy?"

Answer: Galvanic skin response/ Electrodermal response

Reasoning:

A transient change in certain electrical properties of the skin, associated with the sweat gland activity and elicited by any stimulus that evokes an arousal or orienting response. Originally termed the psychogalvanic reflex, this phenomenon became known as the galvanic skin response. Electrodermal response (EDR) has replaced galvanic skin response as the collective term.

The skin of a relaxed person has a low electrical conductance (high resistance), and the skin surface is some 40 mV negative with respect to interior tissues. Sweat gland activity changes these electrical properties by increasing skin conductance and by changing the balance of positive and negative ions in the secreted fluid.

Tonic skin conductance varies with psychological arousal, rising sharply when the subject awakens and rising further with activity, mental effort, or especially stress. Phasic skin conductance responses are wavelike increases in skin conductance that begin 1–2 s after stimulus onset and peak within about 5 s. The amplitude of the skin conductance response varies with the subjective impact of the eliciting stimulus, which in turn varies with the intensity of the stimulus, its novelty or unexpectedness for the subject, and its meaning or signal value. Aroused subjects display spontaneous skin conductance responses, generated apparently by mental events or other internal stimuli; their frequency, like the tonic skin conductance level, increases with the level of arousal.

Electrodermal responses are measured in studies of emotion and stress, conditioning, habituation, and cognitive processing, that is, when it is desired to assess the differential or changing impact of a series of stimuli. See also Electroencephalography; Lie detector; Sympathetic nervous system.

Reference:

McGraw-Hill Encyclopedia of Science and Technology, 5th edition, published by The McGraw-Hill Companies, Inc.

quoted at: http://www.answers.com/topic/galvanic-skin-response

Your observation of the phenomenon and association of conditions is first rate science!

milo

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#20
In reply to #19

Re: Electric Shock from Car Door

07/08/2009 10:28 AM

Bravo, I always give a GA for referenced answers. Add your dermatological change in conductivity answer to my emotional sensitivity and I think we have an answer here. (But it should be at least a 75/25 split in your favor. )

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#21
In reply to #20

Re: Electric Shock from Car Door

07/08/2009 10:36 AM

milo

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#27
In reply to #19

Re: Electric Shock from Car Door

07/10/2009 6:12 AM

Hi Milo,

Thank you for your very good answer,at least i know why it happen to me ,i have try of few cars of mine which is age from 1 yr old new car up to 18 yrs old car and also i have dress with different cloths (non static) and the result still the same. "Not in good mood or with sad feeling" it happen static shock but not "during happy day."

Thank you very much

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#28
In reply to #27

Re: Electric Shock from Car Door

07/10/2009 8:48 AM

You're welcome aikhh!

Your observation of "when it happens, When it doesn't" is key to effective problemsolving. I call it "digital thinking" in my prooblemsolving classes. Describe the problem in terms of what it IS, and what it IS NOT- just as you did.

milo

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#22

Re: Electric Shock from Car Door

07/08/2009 11:36 AM

change your seat cover

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#23

Re: Electric Shock from Car Door

07/08/2009 12:21 PM

Aikhh

Check yourself if you had cut the nails of your fingers on the days you got shocks. I used have electri shocks from water taps, whenever I had cut my nails. Finger tips without nail cover are so sensitive to currents/ statics.

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#24

Re: Electric Shock from Car Door

07/08/2009 6:13 PM

short starter....

starter started acting funny

replace starter prob gone believe it or not

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#25
In reply to #24

Re: Electric Shock from Car Door

07/09/2009 9:35 AM

Lessons learned:

Consensus indicates social, not scientific agreement with the facts.

Given no applicable facts, social construct of consensus is all that can be expected.

In the absence of quantitative data, no way to "qualify" nature of the phenomenon.

An indication of the car's overall condition /photo/ could have elicited alternatives like short circuits in steering column, ignition or starter system.

Still, a great exercise.

guest746

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#26

Re: Electric Shock from Car Door

07/09/2009 9:41 AM

Buy an new GM car - stimulate the economy and ....more cowbell.

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Users who posted comments:

aikhh (1); Andy Germany (1); Anonymous Poster (5); ashoktoshniwal (1); DAG (1); hd4utoo (1); Hendrik (1); JLMEALER (2); keshi123 (1); Milo (3); MSsteel1 (1); PWSlack (1); Randall (1); redfred (2); Roman (1); s.udhayamarthandan (1); Sal (1); standarded (1); THE RPR (2)

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