5. Glossary
Self-heating effects
Heating of NTC ceramics by Joule effect (in the high-voltage zone of the I = f (V) curve), leading to a reduction in resistance and an increase in current.
Polycrystalline ceramic
Dense material obtained from a powder shaped and sintered at a temperature below its melting point.
Temperature coefficient B or β (parameter equation: B or β) expressed in K
Calculated relationship between two temperatures :
B = T
1
T
2
/(T
2
– T
1
) × log (R
1
/R
2
)...
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