Posts with the tag equipment testing

USB Charger Specifications and Measurements

This is a list of USB power supplies / chargers that I own. I measured their properties like how they identify themselves as charger devices, I measured their open circuit voltage but also the behaviour under load.

Nominal Specifications:

Supply for Voltage Current Imprint
Google Nexus 4 5.0 V 1.2 A Model: MCS-01ER
Apple iPad 4 5.2 V 2.4 A Model...

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