- Easy to read LCD display with backlight.
- It can measure the usb-powered devices.
- Accurately measure voltage and current of USB ports and devices.
- Compact and easy to carry, no additional power supply, plug and play.
- Suitable for factories, laboratories and personal use.
Use the USB charger doctor - voltage and current display to measure the voltage and current output for any USB port and project. This blue plastic dongle plugs between a USB device and passes the data lines through. There's a 0.05 Ohm resistor in line with the power pin that is used to measure the current draw. The doctor's digital display alternately displays the USB voltage and the current draw.
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