GP250 Datasheet, PDF (5/9 Pages) List of Unclassifed Manufacturers – RELAY - LATCH 2 PDT, 2 AMP

Application notes
N°001
CORRECTION DUE TO COIL COPPER WIRE RESISTANCE
CHANGE IN TEMPERATURE
1.8
1.6
1.4
1.2
1
0.8
0.6
-80
-30
20
70
120
170
Temperature ( °C)
Nominal Resistance at 25°C
Nominal Resistance at 20°C
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
-1-
Page 1 of 1