he behavior you're observing with the Azure Kinect's power consumption when connecting and disconnecting the barrel connector is related to how the device manages its power sources and how it adapts to different power levels.
Here's a general explanation of what might be happening:
USB Power: When you initially connect the Azure Kinect via USB, it likely draws around 0.18-0.19 A from the USB port, which is a standard USB power draw for data transfer and basic functionality.
Barrel Connector: When you plug in the barrel connector (an external power source), it provides more power to the device. The Azure Kinect, in response to the additional power, might adapt its power consumption to handle more intensive operations or to maintain optimal performance, which could result in a higher power draw.
Disconnecting Barrel Connector: When you disconnect the barrel connector, the Azure Kinect might continue to draw more power from the USB port as it maintains the settings or power profile it adapted to when the barrel connector was connected. This could explain the increased power consumption you're seeing after disconnecting the barrel connector.
Please note that the exact behavior might depend on the device's internal power management system, and the device's behavior could vary between different versions or models of the Azure Kinect.
If you're interested in understanding the device's behavior in more detail, you might consider contacting Microsoft's support or Azure Kinect's technical support for specific technical insights. They may be able to provide more information on how the device manages power and what's happening internally without the need to open it.