Applications of Capacitance and Inductance Meters

发布时间：2022-10-27

With the advancement of the electronics manufacturing industry, electronic components have seen significant improvements, and the use of electronics has become increasingly widespread. In product development, we often need capacitors of various capacitance values. The testing of capacitors has evolved over time, with numerous methods available. Industry trends are undoubtedly moving toward miniaturization and integration, with extensive adoption of automation technologies and intelligent systems. Today, we’d like to introduce a software solution that enables automated capacitor testing—called the Automated Test System Software. It can test resistors, capacitors, and inductors, covering a wide range of parameter types.

1. Main parameter testing of capacitor and inductor testers: AC excitation can affect the charging and discharging rates, leading to voltage instability; at the same time, it reduces the accuracy of measurements under harmonic distortion conditions, which is unfavorable for low‑pass filter design. An automated test system can comprehensively measure all relevant parameters of capacitors, including capacitance, dissipation factor, leakage current, DC equivalent series resistance (ESR), charge–discharge efficiency, impedance, as well as ESR and temperature characteristics.

2. Capacitor Aging Test: The automated test system software can perform automated aging tests on capacitors by applying an operating voltage while simultaneously subjecting them to sustained high‑temperature conditions and alternating high‑ and low‑temperature cycling, thereby accelerating capacitor degradation and assessing their stability. The software is modular, supports channel expansion, and provides independent monitoring and fault‑isolation capabilities for each current channel, ensuring that a failure (such as a short circuit) in one capacitor does not affect the other channels.

This platform is well-suited for large-scale testing, with a single test cycle capable of handling tens of thousands of units. Consequently, it employs a multi‑power‑supply configuration, allowing for scalable expansion of the switching power supply and supporting multi‑channel operation—meaning that during a single test, different channel voltages can be configured to accommodate various types of capacitors. This enables simultaneous long‑term thermal‑humidity cycling while testing multiple capacitor models, significantly boosting testing efficiency.

3. Capacitor and Inductor Testing: The instrument simulates a wide range of extreme operating conditions for capacitors, such as high‑temperature exposure and prolonged power‑on operation. It features real-time current‑channel monitoring and automatic short‑circuit protection, enabling automated testing of up to tens of thousands of capacitor units. It supports 12‑channel ultra‑capacitance testing and 16‑channel high‑precision temperature acquisition in parallel. For applications requiring more than these channel counts, the system can be expanded by adding additional test‑channel configurations.

4. Operation of the capacitor–inductor tester: It allows flexible configuration of key parameters such as test duration, charge‑discharge methods, and pass/fail criteria, while recording characteristic curves—including voltage/current versus time, internal resistance versus temperature, resistance versus temperature, resistance versus time, and leakage current versus time—under the current test conditions, facilitating intuitive analysis. Users can either create their own test procedures or select standard test sequences, ensuring compliance with a wide range of testing requirements.

5. Database Storage Testing: Upon completion of testing, the software automatically generates a test report. The report can be exported in multiple formats, with customizable options, and users can view historical records as well as import and export data.

Capacitance and Inductance Tester

Regularly inspect the capacitor and inductor tester for verification.

What are the precautions for using a transformer volt-ampere characteristic tester?

Regularly inspect the capacitor and inductor tester for verification.

What are the precautions for using a transformer volt-ampere characteristic tester?