Chosen Solution
Hello, So i bought this:
And i checked some videos(tuttorials) online. When u want to power up a phone, how can you know the right voltage? I checked some videos and people set 4,8V for Samsung phones. I tried it with two phones S3 and another Samsung and both just showed the logo Samsung on the screen and then power off. In most of the videos the device power up and people use the device. So what am i doing wrong? How can you know the right voltage for a device?
For an iPhone, you would set the voltage to 4.2V. You can check the relevant schematics to see what voltage the main rail (VCC) is at and set your PS accordingly. If you don’t know, you could always set it to the battery voltage, typically ~3.8V but just look at the battery to see what it says. Your problem may be that the PS is current limiting and therefore not delivering enough juice to your device. You can turn your current knob halfway to full to insure the device gets enough current. Then just look at the display to see how much current it is sourcing.
