cqaigy2
Super Member
SPYDERLK said:Youve got the right idea with shielding, but ElectroMagnetic energy from an arc is nearly all in the conventional RF range. The tactic would be to reflect or shunt the energy-a Faraday cage and then some, rather than absorb as done with x ray. I think it would be a dangerously touchy setup to shield a body reliably EVERY time. I have some people I know with EMInterference/EMSusceptability experience. Ill tickle their brains a little. Im sure youd need to know the EMS spec of the pacemaker then compare it to the spectrum and intensity of energy from the arc, then characterize the sheilding. Ill get back on this next week.
larry
Bob, glad to hear you are doing ok!
On the arc welding thing, I'd think the problem is any voltage/current that could interfere with the heart beat that's created with the pace maker and damage to the pacemaker itself. The voltage could be induced via RF or by contact with the electrodes on the arc welder. Now i don't know if i've ever induce a voltage inside my body from arc welding, but some years ago, i did light up a friend of mine that was playing around and reached in to move the thing i was going to weld as i dropped my helmet. At the same time i stuck the stinger on his hand. My buddy was ok, but his mom was kinda mad because the jolt threw him back against the shelves that had a bunch of tasty home canned peaches.
I haven't done any gas welding in many many years, but one thing i do remember is you need pretty big tips to weld 1/4" or better.