Linoya 4-Ports 4A USB A16
![DSC_0790](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0790.jpg)
Official specifications:
- 4 USB Ports: Charges 4 USB devices simultaneously at full speed, saving your time.
- Super Portable Design: Comes with folding plug and is just 8.0 x 5.8 x 2.5 cm.
- Wide Range of Compatibility: All USB ports are smart ports. With the smart technology, you can plug every port you want with any 5V devices.
- Input: AC 100-240V 50/60Hz 800mA max
- Output: DC5V 1A / 2A (Max. 2A)
- Totally output: 4A
- Model: Linoya A16
- Interface: USB2.0
- Certificate: SAA, PSE, FCC, CE, CCC
- Optional Color: White
- Product Weight: 0.108 kg
I got it from gearbest sku:130349701
![DSC_0784](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0784.jpg)
I got this charger in a cardboard box.
![DSC_0785](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0785.jpg)
The box only included the charger and a instruction sheet.
![DSC_0794](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0794.jpg)
![DSC_0793](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0793.jpg)
![DSC_0795](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0795.jpg)
The black dot/hole is a blue led (It is not a hole, there is some clear plastic behind it).
Measurements
- Power consumption when unloaded is 0.15 watt
- All port are in parallel.
- Blue led is on when power supply is powered.
- USB Output #1 (iPhone) is coded as Apple 1A
- USB Output #2 (Android) is coded as USB charger (DCP)
- USB Output #3 (Sam) is coded as Samsung
- USB Output #4 (Ipad) is coded as Apple 2.1A
![Linoya%204-Ports%204A%20USB%20A16%20%231%20load%20sweep](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Linoya%204-Ports%204A%20USB%20A16%20%231%20load%20sweep.png)
Output voltage is fine, but there is no individual port overload protection.
![Linoya%204-Ports%204A%20USB%20A16%20%234%20load%20sweep](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Linoya%204-Ports%204A%20USB%20A16%20%234%20load%20sweep.png)
![Linoya%204-Ports%204A%20USB%20A16%20load%20sweep](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Linoya%204-Ports%204A%20USB%20A16%20load%20sweep.png)
There is a total overload protection at about 4.5A.
![Linoya%204-Ports%204A%20USB%20A16%20load%20test](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Linoya%204-Ports%204A%20USB%20A16%20load%20test.png)
No problem running at 4A for one hour.
The temperature photos below are taken between 30 minutes and 60 minutes into the one hour test.
![Temp2190](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Temp2190.png)
M1: 44,7°C, M2: 59,1°C, M3: 37,3°C, HS1: 65,1°C
HS1 is the transformer.
![Temp2191](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Temp2191.png)
M1: 34,8°C, M2: 35,7°C, HS1: 50,0°C
HS1 is the mains switch transistor.
![Temp2192](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/Temp2192.png)
M1: 47,4°C, M2: 51,7°C, M3: 53,8°C, HS1: 70,6°C
HS1 is the rectifier diode.
![10ohm](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/10ohm.png)
At 0.5A the noise is 33mV rms and 900mVpp, the is some peak noise.
![2.5ohm](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/2.5ohm.png)
At 2.5A the noise is 27mV rms and 620mVpp
![1.2ohm](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/1.2ohm.png)
At 4A the noise is 10mV rms and 210mVpp, at full load the noise is low.
Tear down
![DSC_0914](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0914.jpg)
I had to help my vice with a mallet to open this one, the glue was a bit strong.
![DSC_0915](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0915.jpg)
On the mains side there is a fuse, a common mode choke and the mains switch transistor. There is also a safety capacitor and optical feedback chip. The low volt side has a rectifier diodes and an inductor. The led can be seen between the usb connectors.
![DSC_0917](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0917.jpg)
Here the fuse and the choke can be seen, together with the small heatsink for the mains switch transistor.
The damage to the usb connectors was from my mallet.
![DSC_0920](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0920.jpg)
The blue capacitors is the safety capacitor (It is marked as a safety capacitor).
![DSC_0919](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0919.jpg)
The heatsink for the rectifier diode takes up a lot of space here, the inductor can be seen just behind the usb connectors.
![DSC_0916](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0916.jpg)
On the mains input is a bridge rectifier (DB1). The mains switcher controller is U1 and the controller for the optical feedback is U3.
Below the usb connectors are the coding resistors.
![DSC_0921](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0921.jpg)
![DSC_0922](https://lygte-info.dk/pic/USB%20PS/35%20Linoya%204-Ports%204A%20USB%20A16/DSC_0922.jpg)
Nice design with a slot, but equipment that can be used on 230VAC must have 4mm between mains and low volt side (when there is a gap). The distance is about acceptable for 120VAC.
The charger passed an isolation test with 2500 volt, but failed a 5000 volt test, this makes the charger acceptable for 120VAC usage, but doubtful for 230VAC usage.
Conclusion
For US it works, but the noise is a bit on the high side.
But it is marked for 240VAC and that is NOT safe.
Notes
The usb power supply was supplied by gearbest for a review.
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