Shock Value B/Circuit Lab C

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Re: Shock Value B/Circuit Lab C

Postby cyanophycean314 » Tue Mar 26, 2013 1:11 am

iwonder wrote:Umm, part 2 links to the part 2 key and part two key links to the part one key. :P

Ha, thanks about that. I knew I was going to screw something up like that. I think it's fixed now.

iwonder wrote:And the hazardous voltage to humans value varies depending on a lot of factors(where it's applied, sweat level, stuff like that) so it might help to clarify the question.

Yeah, I know that's kind of a bad question, but I just found that answer here: http://www.allaboutcircuits.com/vol_1/chpt_3/4.html (Scroll down to review)
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Re: Shock Value B/Circuit Lab C

Postby iwonder » Tue Mar 26, 2013 1:25 am

Well it's probably worth some kind of clarification, and Id really dispute that, maybe if you found OSHA or UL/CSA requirements about hazardous voltages if feel better. But the scars from my 600v AC shock tend to disagree with the notion that something like 30v could produce something 'dangerous' unless it's under very specific circumstances.
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Re: Shock Value B/Circuit Lab C

Postby cyanophycean314 » Tue Mar 26, 2013 1:35 am

iwonder wrote:Well it's probably worth some kind of clarification, and Id really dispute that, maybe if you found OSHA or UL/CSA requirements about hazardous voltages if feel better. But the scars from my 600v AC shock tend to disagree with the notion that something like 30v could produce something 'dangerous' unless it's under very specific circumstances.


This question probably should be thrown out, and feel free to do so when you take the test. I'll see if I have time to change it, but the source itself states it so broadly ("Any voltage above 30 is generally considered to be capable of delivering dangerous shock currents").
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Re: Shock Value B/Circuit Lab C

Postby Unbihexium » Tue Mar 26, 2013 1:55 am

cyanophycean314 wrote:
iwonder wrote:Well it's probably worth some kind of clarification, and Id really dispute that, maybe if you found OSHA or UL/CSA requirements about hazardous voltages if feel better. But the scars from my 600v AC shock tend to disagree with the notion that something like 30v could produce something 'dangerous' unless it's under very specific circumstances.


This question probably should be thrown out, and feel free to do so when you take the test. I'll see if I have time to change it, but the source itself states it so broadly ("Any voltage above 30 is generally considered to be capable of delivering dangerous shock currents").


Oooo are we talking about how one can die from electricity? I'm pretty sure if you unloaded an ultracap into a person, they could die... Also a marx generator pulse... I like electrocution!
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Re: Shock Value B/Circuit Lab C

Postby iwonder » Tue Mar 26, 2013 1:56 am

You and your ultracaps... :lol:
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Re: Shock Value B/Circuit Lab C

Postby Unbihexium » Tue Mar 26, 2013 2:00 am

iwonder wrote:You and your ultracaps... :lol:

What can I say? I'm obsessed a bit... I love em... I got a few recently, its so much fun...
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Re: Shock Value B/Circuit Lab C

Postby iwonder » Tue Mar 26, 2013 2:03 am

What size are they?
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Re: Shock Value B/Circuit Lab C

Postby Unbihexium » Tue Mar 26, 2013 2:32 am

iwonder wrote:What size are they?

2600 F
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Re: Shock Value B/Circuit Lab C

Postby Toms_42 » Wed Apr 03, 2013 3:22 am

For shock value, would anyone like to share info on multicolored circuits? They are confusing the living daylights out of me, and I wanted to know if anyone knew if it is necessary knowledge for states or not. Haven't seen it yet.

Also, does anyone have a list of people who made major electronic breakthroughs/discoveries?
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Re: Shock Value B/Circuit Lab C

Postby Jdogg » Wed Apr 03, 2013 3:30 am

Toms_42 wrote:For shock value, would anyone like to share info on multicolored circuits? They are confusing the living daylights out of me, and I wanted to know if anyone knew if it is necessary knowledge for states or not. Haven't seen it yet.

Also, does anyone have a list of people who made major electronic breakthroughs/discoveries?


What do you mean multicolored circuits? Like the resistor color code?
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Re: Shock Value B/Circuit Lab C

Postby iYOA » Thu Apr 04, 2013 1:02 am

in the rules it says any "basic" multimeter can be used. Are auto-ranging ones considered "basic"?
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Re: Shock Value B/Circuit Lab C

Postby iwonder » Thu Apr 04, 2013 1:05 am

I believe so. There's a discussion about the letter of the rule and the intent of the rule earlier on this year, but I'm fairly certain auto ranging meters are basic.
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Re: Shock Value B/Circuit Lab C

Postby Toms_42 » Thu Apr 04, 2013 2:17 am

Oops, I meant "multilooped. It autocorrected it 0.o


As in, circuits with multiple batteries. Can someone explain why the loop and current directions when using kirkhoffe's rules are arbitrary?
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Re: Shock Value B/Circuit Lab C

Postby Unbihexium » Thu Apr 04, 2013 2:33 am

Toms_42 wrote:Oops, I meant "multilooped. It autocorrected it 0.o


As in, circuits with multiple batteries. Can someone explain why the loop and current directions when using kirkhoffe's rules are arbitrary?


Because if you choose the direction to be wrong, you'll simply end up with a negative current. However, you should avoid kirchhoff's rules in circuit analysis as they result in horrendous systems of equations to solve, so instead learn the node voltage and mesh current analysis method, they reduce the number of equations and make your life easier. They are simply more simplified versions of kirchhoff's laws intended for analysis.
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Re: Shock Value B/Circuit Lab C

Postby Infinity Flat » Thu Apr 04, 2013 2:45 am

Unbihexium wrote:
Toms_42 wrote:Oops, I meant "multilooped. It autocorrected it 0.o


As in, circuits with multiple batteries. Can someone explain why the loop and current directions when using kirkhoffe's rules are arbitrary?


Because if you choose the direction to be wrong, you'll simply end up with a negative current. However, you should avoid kirchhoff's rules in circuit analysis as they result in horrendous systems of equations to solve, so instead learn the node voltage and mesh current analysis method, they reduce the number of equations and make your life easier. They are simply more simplified versions of kirchhoff's laws intended for analysis.

If your only issue is multiple batteries, I think its easier to do superposition with the batteries. But really just do whatever you're most comfortable with.
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