@HKJ : base on your test result, I almost purchased 8 USB chargers for my family, friend and myself, I love the way you did but I also gave you a comment about the difficult in searching your device tested. Would you mind to add the search functionality to let people can search by device name / brand name (full or a part), model…etc ? it will be more convenience for all of us.
THanks
Hello! Recently found an intriguing DIY device in AliExpress, it is an adjustable CC/CV DC/DC boost converter with very low input voltage (2 - 24V), high input current, input overcurrent protection via fuse and resistor adjustable input undervoltage protection. It even features USB output (!) and to top it off its :-)) cheap:
I’m not a very big fan of those trimpots on DC converters. They might not work for very long. Some are rated for only 200 cycles, which comes up fast if you’re constantly adjusting the output.
Thanks for video pinpointing the difference maukka. I was already aware of, trimpots are easily replaceable with potentiometers. Now that I'm here let me suggest using logarithmic potentiometers for led brightness adjustments, as is the case with audio volume controls it'll result in a vastly improved accuracy.
Yeah, I did, but compare with the search functionality to limited the condition/filter the guest want to see, the search functionality of web browser will not be the good one
I tried to find Enpower USB 1 port 2A as your test but seem it was too old device so that could not find in the market, just can order enerpower-ep-10b-5v-2a-usb-black-10w now. Thank you
I've been looking for a DIY power bank case with some extra functionality and found an interesting device for the DIY crowd a while ago, an inexpensive power bank/mobile power supply box from (?) AILI, takes six cells in 3S2P arrangement:
I tried to contact with local DHL service to send it to EU area (you mentioned you are in Denmark) BUT the delivery cost is more than 12 times of the charger price, sorry, your living area is quite expensive so send smth like this charger
Just dropped by to say that I've found something interesting. It's an USB powered soldering iron, looks close to the one which once reviewer Dave from EEVblog tested:
But it evolved…
… into this new super cheap Aneng LT002 soldering iron!
That looks very interesting, except when you see the price.
I would need some serious donations before getting that, but I would also need to make some test equipment that can test power at 230VAC (I am sort of thinking about doing that).
The problem with testing 120/230VAC devices is to have a load that can handle AC at 350VACpeak with constant resistance (Constant current is basically useless, a high peak current test may be interesting).