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- Path: sparky!uunet!zephyr.ens.tek.com!master!pendragon!tonyo
- From: tonyo@pendragon.CNA.TEK.COM (Tony Ozrelic)
- Newsgroups: sci.electronics
- Subject: Re: SHOCKING STORIES
- Message-ID: <3217@master.CNA.TEK.COM>
- Date: 22 Jul 92 20:35:45 GMT
- Sender: news@master.CNA.TEK.COM
- Organization: Tektronix, Inc., Redmond, OR.
- Lines: 52
-
- OK, here's mine:
-
- Tesla Coils:
-
- Numerous RF burns as a result of 'experimenting', including one
- whale of a shock due to directly connecting the bottom of the secondary coil
- to the top of the primary and using a screwdriver to draw an arc from the
- top of the secondary (my thumb was just a *leetle bit* too close to the
- metal part of the 'driver).
-
- Van de Graafs:
-
- The Human Capacitor trick is neat (stand on an insulating
- platform, grab top of VDG, hang on as long as you can) - if you don't
- arc to anything, EVERYTHING repels everything - your shoelaces stand on end,
- and when you spit, the saliva rips itself apart into a fine spray as it
- leaves your mouth, then does a right-angle turn in midair as it zips over to
- something grounded! My brother decided it would be fun to discharge
- me by pulling a spark from my nose - it felt like somebody hit me in the face
- with a tennis racket.
-
- Accidents:
-
- I built a brainwave detector (right out of PopTronics, during the
- Biofeedback Era), and didn't have any 9V batteries to power it, so I used my
- homebrew 15V power supply. Hookup, put the headgear on, try to detect
- brainwaves, just hear 60Hz hum. Fool around with controls. Still no good.
- Need to get to tweak some pot in the box, grab power supply to move it out of
- the way - I grabbed the heatsink, which was hot with unregulated 15V, and the
- middle of my forehead was grounded. What an experience! the entire world
- did the same thing your TV set does to the picture when you turn it off -
- everything shrinks and goes dim! I found that by adjusting the pressure of
- my grip, I could cause the shrinking/dimming to vary. It scared the crap out
- of me, and I never did get around to trying the thing out with batteries.
-
- Another time I was working as a repair tech on seat boxes (the gizmos under
- your airplane seat that pipe music to you - 12 channels of stereo, plus a
- PA line for the pilot and an intercom, all time-division multiplexed onto
- one wire, to save weight). The test fixture used 220V 3 phase 400Hz, 'cause
- that's what the plane had on it, and I managed to get zapped. It felt like
- somebody driving a red hot nail into the back of my hand! It hurt for hours
- afterward.
-
- Inquisitive Kids:
-
- My oldest son (about two at the time) had discovered how to disconnect the
- phone line from the phone. He was chomping on the end when I heard the extension
- ring. The look on his face was beyond description. The phrase "go ballistic"
- pales in comparison to his activities shortly thereafter.
-
- My daughter tried the tweezers-in-the-socket trick and managed to vaporize
- the tweezy part of the tweezers as well as the innards of the socket.
-