EEVblog #659 – Medical Plugpack Teardown

What’s inside an IEC60601-1 medical class 5V mains DC-DC plugpack?
What is the difference between PCB clearance and creepage?
A German FRIWO 5V FW7555M/05 brand medical grade isolation unit vs a cheap Wun Hung Lo consumer brand.
Also a comparative look at transformer construction.

Datasheets & Links:
www.farnell.com/datasheets/30889.pdf
IEC_60601
Rubycon Caps
CD 263 Caps.
Vishay Optocouplers

Forum HERE

Podcast: Download