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- Path: sparky!uunet!mcsun!sunic!chalmers.se!etek.chalmers.se!fy.chalmers.se!f92anha
- From: f92anha@fy.chalmers.se (Anders Hammarqvist)
- Newsgroups: sci.electronics
- Subject: Re: Help: What is an Independent Current Source!?
- Message-ID: <1992Nov10.152755.13755@fy.chalmers.se>
- Date: 10 Nov 92 15:27:55 GMT
- References: <Nov.9.00.11.39.1992.9368@clam.rutgers.edu>
- Sender: ho@fy.chalmers.se (H}kan Olsson)
- Organization: Chalmers Univ. of Technology, G|teborg, Sweden
- Lines: 23
-
- In article <Nov.9.00.11.39.1992.9368@clam.rutgers.edu>, steuer@clam.rutgers.edu (robert Steuer) writes:
- |> I understand an Independent Voltage source is like a battery and I
- |> understand that an Independent Current source can supply a current,
- |> but what is a REAL-LIFE example of an Independent Current Source?
- |> I have asked fellow students, my teachers, even a teacher with a
- |> Doctorate Degree and still I get hmmm, thats a good question!
- |>
- |> -------------------------------------------------------------------------------
- |> | Robert Steuer Internet: steuer@clam.rutgers.edu |
- |> | Rutgers University Amateur Radio: KF2EK@N3FOA.#EPA.PA.USA.NA |
- |> -------------------------------------------------------------------------------
-
- Well, my father told me about a real-world application for an independent
- (constant) current source, which is not exactly what you asked for, but
- might be of help anyway... In the old days (before high-power halogen
- lamps?) they used an arch-light in the movie projectors used in theaters.
- This device consisted of a constant current source and two electrodes. To
- start the thing, the electrodes were shorted and the supply switched on. The
- electrodes were then moved apart and an arch formed between them.
-
- I also believe that and electric welder is a constant current source.
-
- Anders Hammarquist, f92anha@fy.chalmers.se
-