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Old 13th May 2018, 05:46 PM   #1
revenant is offline revenant
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Exclamation voltage source

Hi to u all,
in these modern times,with sophistication of the technology.could it be that one day an infinite voltage source be developped or is this impossible as no matter what is done some resistance will aĺways be present.?
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Old 14th May 2018, 12:59 AM   #2
PRR is offline PRR  United States
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NFB can force small-signal impedance through zero to negative impedance.

A truly INFINITE voltage source could handle ANY load without sag. Megawatts. Gigawatts. Jiggawatts. That will never happen.
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Old 14th May 2018, 01:07 AM   #3
Refugee1 is offline Refugee1  United Kingdom
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Have a look at this snake oil making machine.
YouTube
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Old 14th May 2018, 01:57 AM   #4
rayma is offline rayma  United States
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Quote:
Originally Posted by revenant View Post
no matter what is done some resistance will aĺways be present.?
Superconductors have been in practical use for decades, and have virtually no resistance.
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Old 14th May 2018, 02:51 AM   #5
revenant is offline revenant
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Superconductors have virtually no resistance.but isn't that at -273degrees Kelvin?
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Old 14th May 2018, 02:56 AM   #6
rayma is offline rayma  United States
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Depends on the material, some work at over 100K at present. When superconductivity is needed, the liquid nitrogen cooling is cheap relative to the performance.
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Old 14th May 2018, 01:37 PM   #7
DF96 is offline DF96  England
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What does the OP mean by an "infinite voltage source"? Infinite size, infinite voltage, infinite current sourcing ability, infinitely low output impedance?
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Old 14th May 2018, 03:04 PM   #8
jazbo8 is offline jazbo8
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voltage source
I think he meant to say ideal voltage source.
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Old 14th May 2018, 03:26 PM   #9
radtech is offline radtech  United States
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Quote:
Originally Posted by Refugee1 View Post
Have a look at this snake oil making machine.
If you want to see what it's like on the left side of the IQ chart, just read the comments on any Youtube 'free energy' video. The number of people who believe in this BS is astonishing.
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Old 15th May 2018, 12:02 AM   #10
Refugee1 is offline Refugee1  United Kingdom
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I did not even bother with the comments.
The smell of snake oil was just too much for that.
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