Luowei LW-D1 Isolated Power Supply Design Digital Curve Ammeter for Mobile Phone Repair

Package - Ameter + Holder

The Luowei LW-D1 is a digital curve ammeter with an isolated power supply design, built for high-precision diagnostic work in mobile phone and electronics repair. It provides a visual representation of current and voltage, helping technicians detect subtle fluctuations that can indicate circuit problems. 

Key features

• Isolated power supply: The independent isolated power circuit prevents electrical interference and voltage spikes from the main power, which protects the device under test and improves measurement stability.

• High-precision measurement: Optimized for high-accuracy data, the LW-D1 can detect minute current fluctuations (as low as 10mA) and voltage changes (as small as 0.001V). This is crucial for diagnosing tiny components on printed circuit boards (PCBs).

• Visual curve display: It features a 2.8-inch TFT LCD screen that uses the LVGL system for a high-refresh-rate interface. The display shows real-time current and voltage data as a dynamic curve, offering a visual "heartbeat" of the circuit.

• Dual-mode display: The interface can be switched with a single click to show either a large digital readout or the visual curve display for more detailed analysis.

• Versatile mounting: A built-in 1/4-20 threaded interface allows the ammeter to be attached to a telescopic clamp or bracket for optimal positioning. 

How it is used in mobile repair

The

LW-D1

functions as a precise diagnostic tool, similar to a doctor using an ECG machine to monitor a patient's heartbeat. For mobile phone technicians, it allows for the following applications: 

• Power-on diagnosis: By monitoring the current consumption when a device is powered on, a technician can spot abnormalities. An unusual current curve can indicate a short circuit, component failure, or a power management issue.

• Leakage detection: The high precision of the

  LW-D1

  makes it suitable for detecting subtle power leakage in a device even when it is turned off. A small, persistent current draw can point to a faulty component or corroded area on the board.

• Troubleshooting components: Observing the current flow when specific parts of the device are activated can help isolate which component is drawing too much or too little power. For example, a stable current curve might be expected, while a spike or a dip could indicate a problem.