USB Charger Doctor Model B อุปกรณ์วัดการใช้พลังงานช่อง USB

1. USB Charger Doctor Model B จำนวน 1 ชิ้น

USB Charger Doctor Mobile Power Detector Battery Test Voltage Current Meter

Use the USB Charger Doctor to measure the working 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 is a 0.05-ohm resistor in line with the power pin that is used to measure current draw.

The Doctors digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.

You can use this device from the 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It flips between voltage and current readouts every 3 seconds or so. Its a very handy tool for testing USB devices, checking load levels and debugging battery chargers and boost converters.