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- Newsgroups: comp.sys.hp48
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!csus.edu!netcom.com!payner
- From: payner@netcom.com (Rich Payne)
- Subject: Re: Volts vs. amps
- Message-ID: <1993Jan26.233246.8023@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <C1DB0J.G7u@ns1.nodak.edu>
- Date: Tue, 26 Jan 1993 23:32:46 GMT
- Lines: 55
-
- In article <C1DB0J.G7u@ns1.nodak.edu> jgreff@plains.NoDak.edu (Jason Greff) writes:
- >
- >This debate shouldn't really take place on this board, but since it
- >started here....
- >
- >I'm sure you've all heard that it's the amps that kill you, not the volts.
- >That's the truth. It takes as little as .1 Amps, regardless of voltage.
- >The debate about the resistance of your body making the current or voltage
- >dependent really doesn't matter. There are such things as current
- >sources, in which case the voltage is dependent.
-
- There are no current sources. What you are referring to are current
- regulated voltage sources. They are limited in their regulation by the
- input voltage. there is nothing in nature that wants to put out 5 amps,
- there are cells which put out 1.5 and 3 volts. generators and alternators
- are also voltage sources, with internal resistances. The only other devices
- which come to mind are feul cells and bi-metallic strips. Care to guess.
-
- > There are such things as
- >voltage sources, in which case the current is dependent.
-
- No, voltage sources are all we have.
-
- > The only
- >question is whether a lightning bolt is a current source or a voltage
- >source. I'm not sure. It would seem that the potential between the cloud
- >and the ground would be a voltage source, but the bolt itself might be a
- >current source (consider that a person struck by lightning may not be the
- >primary target - similar to grabbing any conductor with current flowing in
- >it).
-
- The bolt happens when the voltage exceeds the breakdown voltage between the
- cloud and [the] ground. I am not aware of lightning having any special
- current characteristics, like a fixed or constant current. Since it is
- just static discharge, I am not even sure that it is valid to model it as
- either a voltage of current source.
-
- >I don't want the above to make me sound like I think I'm an expert - I'm not.
- >It's just my opinion.
-
- Lots of opinions flying about. So I'll add mine again.
-
- >--
- >Jason Greff North Dakota State University - Fargo, North Dakota
- >
- >"It's better to remain quiet and be | "It's hard to be an individual while
- > thought a fool than to speak and | you are busy trying to conform." --Me
- > remove all doubt." -- Lincoln |
-
-
- Rich
-
- payner@netcom.com
-
-
-