Effect of high current pulses on solder interfacial reaction and interconnect reliability

2021 ◽  
Vol 122 ◽  
pp. 114151
Author(s):  
J. Mei ◽  
R. Haug ◽  
T. Grözinger ◽  
A. Zimmermann
2008 ◽  
Vol 79 (8) ◽  
pp. 083106 ◽  
Author(s):  
Xiangyang Deng ◽  
Zeren Li ◽  
Qixian Peng ◽  
Jun Liu ◽  
Jianhua Tian

Author(s):  
N. S. M. Ibrahim ◽  
Asmarashid Ponniran ◽  
R. A. Rahman ◽  
M. P. Martin ◽  
A. Yassin ◽  
...  

Batteries play an essential role on most of the electrical equipment and electrical engineering tools. However, one of the drawbacks of lead acid batteries is PbSO<sub>4</sub> accumulates on the battery plates, which significantly cause deterioration. Therefore, this study discusses the discharge capacity performance evaluation of the industrial lead acid battery. The selective method to improve the discharge capacity is using high current pulses method. This method is performed to restore the capacity of lead acid batteries that use a maximum direct current (DC) of up to 500 A produces instantaneous heat from 27°C to 48°C to dissolve the PbSO<sub>4</sub> on the plates. This study uses an 840 Ah, 36 V flooded lead acid batteries for a forklift for the evaluation test. Besides, this paper explores the behavior of critical formation parameters, such as the discharge capacity of the cells. From the experimental results, it can be concluded that the discharge capacity of the flooded lead acid battery can be increase by using high current pulses method. The comparative findings for the overall percentage of discharge capacity of the batteries improved from 68% to 99% after the restoration capacity.


Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1141
Author(s):  
Christian Karch ◽  
Fridolin Heidler ◽  
Christian Paul

The aim of this contribution is to design and test the lightning protection of an aircraft radome exposed to direct lightning strikes. The influencing parameters are investigated on different radome wall samples equipped with solid and segmented diverter strips. The effectiveness of the lightning interception and protection measures is tested with different high-voltage waveforms and representative high-current pulses. The tests show that reliable radome lightning protection can be achieved by an optimized arrangement of solid and segmented diverter strips, even if the aircraft radome has a huge size, with dimensions up to several meters.


1996 ◽  
Author(s):  
W.M. Sharp ◽  
D.A. Callahan ◽  
A. Griedman ◽  
D.P. Grote

1997 ◽  
Author(s):  
W. M. Sharp ◽  
D. A. Callahan ◽  
A. Friedman ◽  
D. P. Grote

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