- Published in issue 1/1992 on page 54
Exploring negative resistance: the lambda diode
Resistance is omnipresent in electronics. A few materials (super conductors) lose their resistance at fairly low temperatures, and all materials lose it completely at absolute zero. However; at normal temperatures. most (conducting) materials obey Ohm's law, but some show characteristics of negative resistance. Are these breaking Ohm's law? And what good is negative resistance?