USB Charger Doctor (Voltmeter Ammeter) - Essential Voltage & Current Meter

Help! This patient is heating up! Is the voltage too low? Is the current draw too high? Is there a usb charger doctor in the house? Oh, thank goodness, the USB Charger Doctor is here! Right on time… Doctor, can you tell us what the current draw is? What about the voltage? Thanks to the Charger Doctor, you can now watch and care for your USB-powered projects. 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’s a 0.05-ohm resistor in line with the power pin that is used to measure current draw. The Doctor’s digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones. You can use this device from 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. It’s a very handy tool for testing USB devices, checking load levels, and debugging battery chargers and boost converters. It’s a little chunkier but more numerical than our USB Power Gauge Mini-Kit. It’s also not open source so check out the USB Power Gauge mini kit if you want to hack together your own power gauge indicator.

Key Features - USB Charger Doctor

• Compact and easy to carry.
• Plugs and plays with no additional power supply needed.
• Measures USB output voltage and current easily.
• Detects USB chargers such as PC USB, home chargers, and car chargers.
• Operates at a voltage rating of 3.5-7 V, with a maximum current support of 3 A.

Applications

This product is ideal for use in testing and debugging USB-powered devices. The usb charger doctor voltage current meter is suitable for use in labs, factories, and personal project settings. Calculate the load levels for mobile phones and electronic goods.

Technical Specifications

How to Use

Simply plug in the usb charger doctor between the USB device and the power source. It will automatically begin displaying the current and voltage, switching every three seconds. Ideal for monitoring and ensuring safe charging levels.

Package Includes

• 1 x USB Charger Doctor (Voltmeter Ammeter)

Additional Resources

• Learn more about USB devices
• Explore our Electronic Modules and Displays Collection