A401 main board and 24V power board electrostatic, surge, load dump test and solution
Test product: A401 motherboard and 24V power supply board
Lei Mao laboratory temperature and humidity: 26 degrees, 61%
Test standard: static electricity, surge, load dump test
one. The test products and standard requirements are as follows:
|
load dump |
Us(V) |
Ri( Ω ) |
Td(ms) |
INTV(s) |
COUNT(C) |
|
24V |
174 |
4 |
350 |
60 |
1 |
|
surge |
Coupling (out) |
phase |
frequency |
|
+0.5KV |
2Ω _ |
asynchronous |
1 |
|
-0.5KV |
2Ω _ |
asynchronous |
1 |
|
surge |
Coupling (out) |
phase |
frequency |
|
+1KV |
2Ω _ |
asynchronous |
1 |
|
-1KV |
2Ω _ |
asynchronous |
1 |
|
static electricity |
discharge method |
|
+8KV |
Contact square electricity |
|
-8KV |
Contact square electricity |
two. Leimao adopts a circuit protection scheme (wechat scans the QR code of the applet to see more protection schemes) :
three. Test photos and result data records:
|
24V power board |
|||
|
original board |
load dump |
Ua=24V , Us=174V, Ri=4Ω , Td=350ms, 1C |
it is good |
|
Surge 1KV |
± 1KV , 60s , asynchronous, 2C |
Damaged, measured 24V |
|
|
Choose Leimao model LM1K24CA |
load dump |
Ua=24V , Us=174V, Ri=4Ω , Td=350ms, 1C |
it is good |
|
Surge 1KV |
± 1KV , 60s , asynchronous, 2C |
it is good |
|
Note: Leimao ULC0524P can pass the HDMI electrostatic test;
Choose Leimao SRV05-4 to pass the card slot electrostatic test ;
If Leimao LC03CI is selected, it can pass the electrostatic test of the network port;
Choose Leimao SR05 to pass the USB electrostatic test ;
Choose Leimao ESDA05CP to pass the static electricity test;
Choose Leimao LM1K24CA to pass power static electricity, load dump, and surge tests ;
Leimao is familiar with static electricity, surge, and load dump test standards, and has a full set of static electricity, surge, and load dump test equipment for free testing by customers. Please feel free to contact Mr. Hu at 18016225001 .