Negative resistance?

  • Thread starter Nereid
  • Start date
  • #1
Nereid
Staff Emeritus
Science Advisor
Gold Member
3,392
2
From wikipedia, there is a reference to "composite configuration of carbon nanotubes which appears to exhibit anomalous results which resemble a static negative resistor", and "Gabriel Kron, while a scientist for General Electric, is thought to have built a negative resistor for the US Navy's "Network Analyser"."

Is there more to this (or is it a 'fringe' case)? If the latter, does it really belong in wiki?
 

Answers and Replies

  • #2
575
1
it's not a fringe case. look up the tunneling diode link at the wiki article. tunneling diodes do have a (U,I)-region like that.
 
  • #3
Tunnel Diode is not a static device, its Imposssible within the laws of Physics to have a static negative resistor.
 
  • #4
101
1
As far as I can understand the Wikipeida arttical it's talking about negative differential resistance and therfore I don't really find it unbeliavabele (perhaps a bit unusual).
 
  • #5
1,681
3
Yes, negative differential resistance means that although it has a positive
resistance, a slight increase inthe voltage causes less current to flow.

A true negative resistance supplies power.
 

Related Threads on Negative resistance?

  • Last Post
Replies
1
Views
597
Replies
2
Views
5K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
14
Views
61K
S
  • Last Post
Replies
2
Views
14K
  • Last Post
Replies
1
Views
431
  • Last Post
Replies
4
Views
745
  • Last Post
Replies
5
Views
3K
Top