Gentherm Global Power Technologies 9-14
P-5050
62553 rev.8
i)
Check the internal resistance, R
i
, is less than 0.58 W. If not the power unit may be
damaged.
Example:
If the load voltage and momentary open circuit voltages were measured as
5.88 V and 10.8 V respectively and the precision load resistance was 0.75
ohms then:
I
L
= 1.38 (V
L
/ R
L)
=
1.38
(5.88/0.75)
= 10.59 A
R
INT
= (V
oc
- V
L
) / I
L
= (10.8 - 5.88) / 10.59
=
4.92
/
10.59
=
0.46
ohms
Internal resistance is acceptable, < 0.58 ohms.
For further information or assistance, please contact the Customer Service Department at
Gentherm Global Power Technologies.
Figure 29
Momentary Open Circuit Diagram
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