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An exception to Ohms Law? Graphene makes electrons act like a viscous liquid with negative resistance
2016-02-25 15:32:24| Extremetech
The hunt for graphene's niche just got a lot weirder -- apparently graphene can make electrons violate Ohm's Law with quantum effects on the nonlocal scale.
NTC Disc Thermistors offer R25 from 4 ohms to 150 kohms.
2014-06-12 14:30:58| Industrial Newsroom - All News for Today
As alternative to thermocouples, NTC disc thermistors come in diameters from 2.54–12.7 mm and profiles from 0.64–5.33 mm and offer precision tolerances to 1% for accurate temperature measurement. Values include resistance at 25 °C from 4 Ω to 150 kΩ, Beta from 3000 to 5000K, and operational ranges up to +150°C. With dissipation constants from 3–17 mW/°C and thermal time constants down to 5 sec, products deliver stability and sensitivity for temperature measurement, compensation, and control. This story is related to the following:Negative Temperature Coefficient (NTC) Thermistors
Sometimes Its as Simple as Using Ohms Law
2014-04-16 18:35:59| Electrical Construction & Maintenance
By Dave Teng, P.E., STE LLP This story begins with a puzzling situation for building engineers at The Ritz Plaza in New York City. read more
Ohms Electrical Services Joins the CurrentSAFE Network
2014-01-24 17:14:00| Electrical Construction & Maintenance
CurrentSAFE has announced that Ohms Electrical Services, a full range electrical services provider in Houston, Texas, is the newest member of the growing franchise network. read more
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Flip Chip COTS Resistors offer resistance down to 5 ohms.
2013-12-11 14:29:45| Industrial Newsroom - All News for Today
Available in 5 chip sizes from 0805–2512, VFCP Series Bulk Metal® Z-Foil Resistors offer power ratings up to 600 mW at +70°C and resistance range from 5 Ω to 125 kΩ with resistance tolerance to ±0.01%. Units feature ultra-low TCR of ±0.05 ppm/°C nominal and ±0.2 ppm/°C typical with load life stability of ±0.005% at 70°C for 2,000 hours at rated power. Featuring non-inductive, non-capacitive design, devices are suited for alternative energy, RTD, Li-ion battery, and smart grid applications. This story is related to the following:Metal Foil Resistors |
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