Application notes

N°001

CORRECTION DUE TO COIL COPPER WIRE RESISTANCE

CHANGE IN TEMPERATURE

Example: Coil resistance at 25°C: 935 ohms. What is it at 125°C?

Correction coefficient on diagram is: 1.39 at 125°C. R becomes: 935x1.39=1299 Ohms

Correction also applies to operating voltages

Date of issue: 3/06

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Page 1 of 1

-80

-30

20

70

120

170

1.8

1.6

1.4

1.2

1

0.8

0.6

Temperature ( °C)

Nominal Resistance at 25°C

Nominal Resistance at 20°C