Re: negative resistor
- From: John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 07 Oct 2006 16:57:16 -0700
On 7 Oct 2006 16:46:57 -0700, "STUARTe" <jabluvs269@xxxxxxxxxxx>
wrote:
if you look at the voltage current relationship at the input side of a
voltage regulator, you'll note that it acts like a negative resistor.
Only a switcher, not a linear regulator.
as the voltage source increases, the current decreases.
my question is, could you get a super conducting (zero resistance)
element by putting a resistor in series with the negative resistor?
You can get as close to zero resistance as tolerances allow, but it's
not a superconductor, it's just a synthesized zero resistance between
two nodes, and it needs a power supply to keep working.
You can do some fun experiments with a 2-terminal negative resistor.
All the normal circuit equations work, but with unusual results, like
voltage dividers with gain and stuff.
John
.
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