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needlove
Joined: 24 Jan 2006
Posts: 12
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 24 Feb 2006 16:12 DC voltage source vs DC current |
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A DC voltage source develops 10 V DC at its output terminals. A DC current
source that you found at the flea market develops 10 A maximum when properly
loaded. Is the first device a high-resistance device, or a low-resistance one? How
about the second device?
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ck84
Joined: 19 Jan 2006
Posts: 70
Helped: 4
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24 Feb 2006 16:19 Re: DC voltage source vs DC current |
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| The 1st device should be a low output resistance because you want to transfer all of the voltage to the load. The Thevenin equivalence of the 1st one is a voltage source in series with the output resistance. The second one is high output resistance to transfer the current to the load.
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needlove
Joined: 24 Jan 2006
Posts: 12
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24 Feb 2006 16:52 DC voltage source vs DC current |
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Could u please more specific? I read some other explaination, but still I don't get it
Added after 1 minutes:
Oh by the way, I have ome more question: Is it easier to make DC current source or DC voltage source. THanks
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24 Feb 2006 16:52 Ads |
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v_c
Joined: 11 Oct 2005
Posts: 468
Helped: 84
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24 Feb 2006 18:24 Re: DC voltage source vs DC current |
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Take a look here http://en.wikibooks.org/wiki/Electronics:Components
I think it will answer your questions. Also, voltages source are easier to make because most electronic sources behave like voltage sources so a bit of regulation
is needed to make them behave as good voltage sources. To make a current source
you must regulate the current of an electronics source -- this can make it more complicated.
v_c
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kohtwe
Joined: 16 Jan 2006
Posts: 22
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24 Feb 2006 19:05 Re: DC voltage source vs DC current |
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If the 1st device use a low output resistance, the second denice will be used a high output resistance. Because directly porportional to resistance.
R=V/I
V=IR
I=V/R
R = resistance
I = current
V = voltage
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