NorthPada Raspberry Pi 400 Raspberry Pi 4 Model B 8GB 2GB 4GB KIT Power Supply Charger AC Adapter 5V 3A PSU USB Type C 4 Feet with On/Off Power Switch
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|Current rating||3 Amps|
|Frequency Range||60 hertz|
|Input Voltage||240 Volts|
|Output Voltage||5 Volts|
About this item
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- Brand: NorthPada
- Input: AC 100-240V 0.3A 50/60Hz, Output: DC 5V 3000mA/3A
- Cable Length: 120cm/4Feet with Power On/Off Switch, USB Type C, Inline Noise Filter
- For Raspberry Pi 400 Raspberry Pi 4 Model B 8GB 2GB 4GB and other devices with USB Type C
- 30 Days Money back and 2 Years Exchange
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Input: AC 100-240V 0.3A 50/60Hz, Output: DC 5V 3000mA/3A
Cable Length: 120cm/4Feet with Power On/Off Switch, USB Type C, Inline Noise Filter
For Raspberry Pi 400 Raspberry Pi 4 Model B 8GB 2GB 4GB and other devices with USB Type C
30 Days Money back and 2 Years Exchange
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And boy, am I glad I did! Ever since connecting this power supply, I have not seen a single undervoltage sign. I played for several hours in one sitting at one time and this power supply kept my Raspberry Pi 3 at full speed. Did I mention I have overclocked my Raspberry Pi 3?
My Retropie setup has a powered fan, USB hub connected with two controllers, wireless keyboard USB dongle all connected at the same time and overclocked to 1300 MHz to boot, and this power supply was able to provide enough juice for everything. It also has a switch for easy power down! I highly recommend this power supply to anyone having a undervoltage problem. In my opinion, it's a must have if you overclock your Raspberry Pi 3.
I spent a lot of time making sure the 60 Hz hum wasn't coming from the 3.5 mm cord itself. (The hum is greatly reduced, though not eliminated, if I use the USB power supply that came with my tablet.)
Disappointed with the lack of quality on this power supply and failure to meet its marketing specs.
*** In summary, I popped on here today to warn others that during my tests I was unable to power both a Raspberry Pi 3 B+ and the 7-inch touchscreen without getting the under-voltage warning.
Take note that I'm talking specifically about the >>> Pi 3 B+ <<<, not the Pi 3 or even the Pi 3B. I'm also talking about powering both the touchscreen and the Pi 3 B+ from a single wart. With one wart powering both the measured voltage dropped down to 5.1 volts and I had the low voltage warning on the display. I tested the Pi 3 B+ without the touchscreen connected and there was no warning. The voltage measured 5.22 volts without the screen. I was slightly annoyed that it wouldn't power both, but since I had purchased 2 of these anyway, I plugged 1 into the Pi 3B+ and 1 into the touchscreen. By using 1 wart for each, it ran perfectly with no warning icon. Once I had the screen on a separate wart, I was even able to add a HifiBerry Dac Pro+ to the Pi 3 B+ without getting the warning icon. (I admit I was surprised that 5.1 volts triggers the low voltage warning. Seems odd to me.)
So, from my personal experience with this unit, if you are planning to use the Pi 3 B+ with the official 7" touchscreen, you should buy a 2 pack of these power supplies and expect to use both simultaneously in order to get rid of the low voltage warning. In my own case, I'm still looking for a single power wart that will power both. I'll probably hook it up to my bench power supply to find out exactly what voltage and current the combination needs while under a heavy workload in order to prevent the low voltage warning.
Tip for using two warts at once: Don't connect the power jumper wires or the USB power jumper between the Pi and the screen PCB. Just plug one wart into the micro USB socket on each board individually. I use a power strip to turn both on at once, but powering the screen up before the Pi would also likely work fine. Turning the Pi on first might cause the Pi to not configure the screen properly because it may not see the unpowered screen during boot, although I haven't verified this.
Tested one of them and it supplied the 3A as rated without issue with voltage only dropping to 5.2v from its starting voltage of 5.49v with no load.
I like the unique packaging it comes in, looks like a MRE. hah
It works, of course, and powers both my Pi 3 and the attached 7" touch screen with no problem. That 'low power' warning symbol is finally gone. It's nice to know that I've got plenty of juice left over for attaching other gizmos and circuitry.