I'm trying to use the 3.3V rail to power up 10 LED (20mA/LED).
I read that the raspberryPi could supply until 1A through this 3.3V rail, that's a lot more than needed when all the LEDs are powered on.
It seems that some of my power supplies don't deliver enough current.
I don't understand why there are such differences in behaviour, the power supplies are supposed to be the same technically.
Is there anything I could have missed about this 3.3V raspberryPi output ?
What could I do to check this power supplies ?