By A Mystery Man Writer
With this handy USB power supply you can get any voltage from 0.5V to 30V and up to 2A current.
Physics Products Online Store
Analog Adjustable USB Power Supply - 1V to 30V 2A
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Robotics and Electronics Kits
Adjustable USB Power Supply - DP2F - 0.5V to 30V 2A
Micro-USB to USB 2.0 Adapter
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Physics Products Online Store
5200mAh USB Mobile PowerBank - 5V 1A
Adjustable USB Power Supply - DP2F - 0.5V to 30V 2A
USB-Powered Physics