Hi. You know those ubiquitous USB wall power supplies? Well I have a bunch of them plugged in 24/7. (Not just for charging phones, etc, but also
to power homebrew projects.)
I recently was worrying about how often the cheap ones (well all really) flame out? How about under very low load?
This brings me to part two of my question: because of my worries I bought what were advertised on ebay as UL listed OEM chargers.
I have the feeling that they are counterfeit. Apart from cracking one open to look, would it be worth comparing the output on a scope to
a known OEM charger from the same company?
Thanks!
to power homebrew projects.)
I recently was worrying about how often the cheap ones (well all really) flame out? How about under very low load?
This brings me to part two of my question: because of my worries I bought what were advertised on ebay as UL listed OEM chargers.
I have the feeling that they are counterfeit. Apart from cracking one open to look, would it be worth comparing the output on a scope to
a known OEM charger from the same company?
Thanks!