- Dec 27, 2001
- 47,351
- 14
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Stop posting here like its facebook?
did someone apply current to your scrotum?
Stop posting here like its facebook?
have to solder again
If I die, I leave everything to Highland
Apparently one of the guys I work with was schocked yesterday in the lab. The lab with the ESD guarded floors.
Get your boss to buy a wrist strap.
Are you wearing fleece again today? Take it off, before you start soldering.
I'm not falling for another attempt to get me to strip.
Perknose still refuses to delete the pics from last time
Static shocks and shocks from the flow of AC are completely different! They feel completely different as well.
As brought up many times with the source and environment that's conducive to receiving static shocks and becoming a victim of ESD failures, nobody has really discussed this "fork in the road" path!
A static shock will be very brief like a pulse. This is because it's a high voltage and the snap you hear is the sudden breakdown of the air between two points of potential. Potentials under the right conditions can be 100s of kilovolts! Current is fairly low in most cases but can be high enough to startle or even stun in extreme cases.
A shock from lines mains or a power supply in comparison is more of a continuous flow that will continue to occur until the power source is disconnected or whatever is bridging the gap is removed.
This discussion appears to be scenario number two. As RS pointed out previously you can easily have potential in an AC system between two devices if the power sources are unbalanced or you have a floating ground somewhere. With a DMM or VTVOM (high input impedance) it's easy to find the culprit. Bring any high resistance paths to ground down to as close as zero as possible and make sure everything is bonded to a common ground. This will eliminate differential potentials that you feel when connecting the path.
Also you may want to protect the circuit with a GFCI in case there is a total failure of chassis ground somewhere. If you touch a hot chassis with one hand and a grounded ESD safe station with the other, the flow can be sufficient to stop your heart!
SON OF ABAD WORD
I ordered a new iron and same result
Actually used a grounding strap and I got nailed worse than ever.
THAT HURT!!!!really bad word
It might be the cushions of your chair in combination with your clothes. It can even be the separate cushions for your back and where you sit on. These two cushions can build up charge separately from each other on your clothes and you. Then when you touch something grounded, you discharge.
It might be the cushions of your chair in combination with your clothes. It can even be the separate cushions for your back and where you sit on. These two cushions can build up charge separately from each other on your clothes and you. Then when you touch something grounded, you discharge.
that makes no sense. you are grounded, the iron is grounded. do you have a faulty ground maybe? do you hear a *pop* when you get shocked? if so that's gotta be static b/c mains voltage isn't high enough to do that. if not it might just be leakage, possibly a bad ground? could do some measurements with a multimeter.
On my work, our at the time secretary would get zapped every time she touched the metal knob of the door. As it turned out, when she got of her chair, her sweater and trousers would rub in a sliding fashion from her chair( She is not that tall). This would cause her to charge up statically. I made a little wand for. It was comprised as a little stick with 5 x 100K resistors in series. One end would be a pointy metal tip and the other end that she would hold was a copper tape strip soldered to the resistors. Every time she would have to open the door, she would touch the knob with her wand and discharge enough without pain to safely open the door. Maybe you could try the same. It could be you are already charged up before you touch the iron.
I'm going to try smashing something if it happens again.