EEVblog Electronics Community Forum

Products => Dodgy Technology => Topic started by: G7PSK on November 27, 2018, 04:17:52 pm

Title: five volt four amp power supply, not.
Post by: G7PSK on November 27, 2018, 04:17:52 pm

I just purchased anNanoPi-NE04 with power supply as it requires rather more than usual. I checked the output voltage under load and of course it dropped to just over three volts at three amps.
So I took it apart and found an unusual electronic component, a ballast gravity ballast that is.
A nice chunk of sheared off steel they even went to the trouble of plating it, obviously top quality ballast.

Title: Re: five volt four amp power supply, not.
Post by: Wan Huang Luo on November 29, 2018, 06:09:03 pm

 :o

Title: Re: five volt four amp power supply, not.
Post by: SiliconWizard on November 29, 2018, 06:20:15 pm

A gravity ballast... ok. ::)

Title: Re: five volt four amp power supply, not.
Post by: kjr18 on November 30, 2018, 06:04:15 am

Well, someone thought: The more power supply weights, the more power you can get from it. So I will take a regular 2A supply, stick inside some slab of metal to make it heavier, and here you go: 4A power supply. :-DD
I still have somewhere a power supply that is kind of too light to be a 12V 4A. Big enclosure but very light.

Title: Re: five volt four amp power supply, not.
Post by: Gyro on November 30, 2018, 01:03:01 pm

Quote from: G7PSK on November 27, 2018, 04:17:52 pm

A nice chunk of sheared off steel they even went to the trouble of plating it, obviously top quality ballast.

At least they maintained its RoHS status - they could have used Lead.  :)

Title: Re: five volt four amp power supply, not.
Post by: SiliconWizard on November 30, 2018, 06:40:26 pm

That kinda reminds me of the fake cable grommets you can find on some cheap chinese products and that serve only as decorative deception. |O