Uploaded December 2024 | Updated September 2026, 4 days ago

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Two AC/DC adapters, left over from some teardowns to, well, teardown …
↓↓↓ Complete description, time index and links below ↓↓↓

During the previous weeks I teared down two enterprise SDSL to Ethernet/ISDN boxes, a Siemens Attane i210 and a Siemens se7950 (links below). I still have two hefty AC/DC adapters left from those teardowns. So let’s tear them down too.

The newer AC/DC adapter has a significantly higher power density (power per volume) than the older one. During the teardown we’ll learn why that is. Of course we have a look at the power MOSFETs, rectifiers and controllers too.

00:00 Intro – two left over AC/DC adapters
00:38 Comparison – difference in power density
02:08 Teardown 1 – Mean Well P66A-8MD03
04:18 Board 1 – Mean Well P66A-8MD03
10:18 Teardown 2 – Phihong PSA50U-120(EF)
12:31 Board 2 – Phihong PSA50U-120(EF)
17:57 Wrap-up – just bye

Teardowns youtube.com/playlist?list=PLwq-2MnM58FJPg01ooMBgy_CxDxAem0my
Siemens Attane i210 (Vintage SDSL to Ethernet/ISDN) Teardown (All the Chips) youtu.be/Ywm7ydid6xc
Siemens se7950 (Older SDSL to Ethernet/ISDN) Teardown (All the Chips) youtu.be/YbJO198Je-Q

#poweradapter #teardown #disassembly #disassembling #robertssmorgasbord