| Electronics > Projects, Designs, and Technical Stuff |
| power supply enclosure |
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| coppercone2:
nah thats too new, its already become cheapened. if they smashed the old one they woulda used a pick axe or a sledge and it woulda been ripped |
| LaserTazerPhaser:
Do desktop brick type supplies such as these https://onlinemeanwell.com/en/gs280a20c4p-319.html need any kind of ventilation? They are probably higher in efficiency and make less heat. Its also far less cumbersome than making panel cutouts for power entry modules and selecting appropriate fusing. These supplies are also much smaller and less hazardous to work with - they are also quite immune to infiltration of liquid and dust. |
| exe:
--- Quote from: LaserTazerPhaser on May 02, 2019, 01:33:16 am ---Do desktop brick type supplies such as these https://onlinemeanwell.com/en/gs280a20c4p-319.html need any kind of ventilation? --- End quote --- Good question, I'd say it depends on the load and efficiency. My experience is, my laptop charges become hot when placed under the pillow. Would it work in a particular scenario I don't know, I propose to measure the ambient temperature. The devices you posted has a nice datasheet showing derating curves (power output vs ambient temperature). |
| LaserTazerPhaser:
Recently obtained 2x of GS280A12-C4P they should be fine to 100% load to 35c ambient issue is locating a receptacle which fits and can handle the current it outputs. |
| exe:
When doing temperature measurements be sure to wait enough time for temperature to set. It's recommended to wait at least 15 minutes to do final measurements (but the temperature should be monitored all the time to avoid overheating). Also room temperature plays a big role. 18C in the winter is not the same as 33C during hot summer. If possible, I'd add some thermal protection circuitry. |
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