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Registered Member #1739
Joined: Fri Oct 03 2008, 10:05AM
Location: Moscow, Russia
Posts: 261
Heh, from some recent experience I wear jeans while soldering even in midsummer - landed a large drop of solder on my thigh twice, that's damn nasty :) Had many eyeshots however but still never wear the goggles - the reflexes do their part anyway usually so it never gets any bad.
Worst non-soldering accident - I had the SSTC in older config running CW from lower voltage in halfbridge. Guess what happened once I realized that the ground current was driven by different parasitic effects only as the ground wire was disconnected. The trick is: I realized that by stepping on it's end ;) The puff-puff sound of an arc, two burned holes in my sock and a week of real torture :) Never ever do anything if you feel sleepy!
Also two stupid burn accidents in the lab - the first was while trying to grab a plug of a matchbox controller rigged to a badly grounded 13.56MHz generator - four red spots on the palm that hurted like hell and disappeared in about two weeks. (Yeah, that was told to be a finished setup - how true :( ). The second burn was like: *switched the generator off* - "Wait a sec, I want to tweak the RF wiring a bit" - *power switch click* - "AAARGH WHAT-WHY?!" - "Oh sorry, I didn't know you've put your hand in there" - "Indeed, how else do you think I'd tweak it and what would I tell you that for..."
Other fun stuff there - "YESS!! I got the desired current!" (guy measuring DC in a HF system with a digital multimeter) - me:"Check the RF noise ;)" - "Damn, something's wrong!" - me:"Heh, one more for the silicon cemetary? Use a needle meter!" - "Yeah, dead! But why does the needle one show the current is that low?" - me:"Maybe because it IS that low?" - "Nah, it can't be! I'll try the variac!" - *the arcover in unballasted cathode-ground circuit blows the meter on around 200vdc with a flash and smoke" - "What-what?!" - me:"Arcover, huh" - "Arcover? It just can't be there! I'll try another one!" (I actually expected him to add a ballasting resistor, but all I saw was a 150mA meter in place of a 50mA one) - *BLAST!* - me:"Huh.." Glad I'm not doing anything with those guys anymore - that mass destruction is definitely not for my nerves, especially as they manage to burn everything they see - meters, caps, thermal vacuum meter tubes - wonder if the scope they ordered is still alive..
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did it again, plugged in the wrong soldering iron!