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Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
pauleddy wrote ...
mabe i will buy a bunch of LEDs and resistors and make some form of glow art or somthing like that i have gon though a few more case there voltages are pretty random right know im sorting them in to piles of <8V 3v~7V and >3V i found dates on the boxes some are from 2003 and others are from 2006
You could make a bunch of led throwies, they would last ~17,000 hours :D
Connect them in series then touch the terminals. I've connected 8 in series and did that XD tingles your finger. I did that in this electonics course and the instructor was more afraid I'd short the batteries than hurt myself. LOL. then connect yourself to an LED and watch it glow. It's also the strangest thing to connect yourself to a mltimeter and see that you have 71.4 across you as it happens. It's only a two volt drop from the 73.3 V it can produce O.O lol. ha I dare you to touch it to your toungue. that's hurt LOL.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
HighVoltageChick wrote ...
It's also the strangest thing to connect yourself to a mltimeter and see that you have 71.4 across you as it happens. It's only a two volt drop from the 73.3 V it can produce O.O lol. ha.....
If you understood Kirchoff's laws youd know why that 2 volt drop happens, and why 71.4V ends up across you.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Golly, there's some real old codswallop in this thread!
Anyway, until - roughly - the 1950s, it was not uncommon for laboratories to use series batteries to produce stable, low noise high voltage.
High voltage batteries were also produced for valve portable equipment, both civilian and military. The WW2 Wireless Set No. 18 HF manpack portable used a battery that provided 162V HT, in addition to low voltage supplies for the filaments and grid bias.
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
SublimeVolts wrote ...
Do not try to measure the resistance of the human body with a 9v, the current it can supply is enough to kill you! (from finger tip to finger tip).
Utterly false. This only happens if both multimeter leads wind up in your fingers, or, potentially, if you're very soggy. A couple mA is not enough to cause fibrillation.
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
bwang wrote ...
SublimeVolts wrote ...
Do not try to measure the resistance of the human body with a 9v, the current it can supply is enough to kill you! (from finger tip to finger tip).
Utterly false. This only happens if both multimeter leads wind up in your fingers, or, potentially, if you're very soggy. A couple mA is not enough to cause fibrillation.
You would have to somehow impale yourself with the leads. The resistance of the human body is definitely enough to limit the current to a safe level.
Registered Member #2909
Joined: Wed Jun 09 2010, 12:31AM
Location: fort belvoir, Va USA ( south of DC)
Posts: 145
well sence i have a moderate heart condision i think i might pass on that shocking experence. right know about a hundred of them are sitting on my flor in groups of 10, each one of them put out about 30-50v, they are all about half dead anyways.
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528 9V batteries
