Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [compliance]

73 questions
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4 answers

Electronics System Standards Compliance: Certification, Testing & Verification

Please note: this question has to do with the technical compliance aspects of the consumer electronics indsutry, and as such, I believe is within scope for this site. This question is about compliance, and Compliance is absolutely a qualitative…
smeeb
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What is this symbol? (assumed compliance mark like CE / FCC)

So Raspberry Pi have a new model out (the Raspberry Pi Zero W). Having taken a look at the photos, I see that on the reverse, where the CE and FCC compliance marks are shown, there is another symbol. It's hard to describe - something like a "T" with…
stefandz
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At what level of complexity should I consider UL listing my widget?

I am interested in making a widget to sell, but it will probably have a small market and small volume. At what level of complexity should I consider UL listing (or otherwise certifying) my widget? I presume that device complexity is the range I…
YetAnotherRandomUser
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Are Ethernet (copper 10/100/1000) compliance tests mandatory?

The IEEE 802.3, for Gigabit Ethernet, and supposedly the ANSI INCITS 263*, for the Regular and Fast Ethernet, have lists of signal quality requirements, which are generally tested using the so-called Ethernet Compliance Tests. The dogma I was…
AndrejaKo
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Sequencing modes for FCC "Intentional Radiator" test

I'm FCC certifying as an "intentional radiator" a product that uses a custom antenna and off the shelf Broadcom WiFi module. The module has an antenna port, so single-modular and limited single-modular certification are out of the question. I have…
Bryce
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Clearance through pcb

I've become fairly familiar with the clearance and creepage requirements of UL/IEC/etc 60950, 60730 and derived/related standards. I've just realised, though, that they only refer to distances through air (clearance) or along a surface(creepage). In…
UStralian
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How to fix EMC problems for existing designs?

I'm going to be looking at a few products that have failed EMC radiated emissions testing and will need to apply fixes in order to make them pass (unfortunately, in these cases, two of the designs can't be modified to fix the problem at board…
Amr Bekhit
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Bluetooth Compliance and Qualification

It seems that all Bluetooth-enabled devices require the Bluetooth SIG Qualification in order to be marketable, but it isn't clear why it's needed so I'm hoping someone here has more experience. I've looked up this other post but I'm not sure how…
Kar
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Double insulation for battery operated device

I work for a lab device manufacturing firm. During the testing of our electronic pipette according to IEC 61010-1,the safety test lab asked why it did not have the symbol indicating double insulation. Our pipette is powered by a rechargeable battery…
Harsh
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Is it feasible for an amateur to bring to market a product with a lithium battery?

I'm a hobbyist/amateur who has been successfully selling a USB MIDI device for several years, and I'd like to make a new battery-powered version. It would ideally have a small (150 mAH) li-poly or LiFePO4 battery and would sell a few hundred units…
Andrew Mowry
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EMI suppression low frequency

I'm dealing with a PWM generator which drives a load at 12V with pretty high currents (5-10A) The PWM frequency is in the band of 100-200 Hz. Which is the best choice and right configuration of ferrite beads to achieve the best filtering of EMI?
Francesco
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CE certification: battery-powered LED lights

There are lots of products on the market that are LED lights which don't all seem to carry CE markings. I'm looking at designing little ornamental things with embedded LED lighting, and trying to work out if this will require EMC testing or whether…
pjc50
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IATA battery rules

Following IATA guidelines two threshold limits are indicated: 20Wh for cells and 100Wh for multi-cell batteries. Question: Should I apply 20Wh limit also for cells in multi-cell batteries? Example: Equipment contain 2-cell battery 45Wh each cell.…
kimstik
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Filtering power to stepper motor drivers for EMI

I have been using Allegro A5977 stepper drivers for a while now (a few years) and I had not too bad of a result meeting the EMI compliance targets even for CLASS B. However I went by the seat of my pants when filtering the VBB (the Motor power…
morzh
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how to confirm that PCB Ethernet layout does not affect perfornace

short version: - How to test if ethernet traces on PCB causing any distortions to the signal? - Is it possible to generate ethernet signals from a windows computer and measure them with an oscilloscope on the other end of ethernet cable? Can I use a…
user2347572
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