Electronics > Projects, Designs, and Technical Stuff

FCC/CE marking for selling electronic products

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Neilm:

--- Quote from: Leo Bodnar on February 08, 2019, 10:21:00 pm ---I recommend this book: https://www.amazon.co.uk/EMC-Product-Designers-Tim-Williams/dp/0750681705/
Put it towards your business costs when you register as a sole trader (you should.)
It covers everything from legislation to design techniques to measurement protocols. 
You probably won't have to buy the EN standards either because a lot of them are quoted in the book.
Leo

--- End quote ---

I have found the books and articles by Keith Armstrong to be very useful - not too much maths and a lot of practical advise. Have a look at http://www.compliance-club.com. You might have to register (for free last I checked) and look up some of his past articles.

OwO:
This is why you should consider running your business from China  >:D

About the mains safety part, yes, if any kind of mains voltage pass through your device then it is problematic. Even if mains wiring goes straight into the pre-certified module there are tons of potential issues that can be lethal: inadequate strain relief on wires, heat dissipation problems, EMI from your device interfering with the power supply controller, etc. I would go for an off the shelf plugpack to be safe.

FCC testing however I don't see much moral issues skimping on. I would do some basic tests, look at the spectrum analyzer with an antenna (even a cheap SDR will do), and make sure there aren't any high peaks in the spectrum (compared to when the device is off). If there are some HF emissions that are slightly over the limit, who cares?

T3sl4co1l:
Oh and power supply modules are assumed to pass regs -- they're tested separately for mains stuff like conducted and surge.  This makes it a whole lot easier to make a product with a wall wart, than with an integrated supply!

Tim

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