# FCT Constant-Current Power Supplies for LED Modules > Source: https://mcd.site team.de/en/industries/aerospace-defense/fct-constant-current-power-supplies-for-led-modules/ > Last updated: 2026-10-05 --- REVIEW OF # Constant-current power supplies for LED modules [Learn More](#) ![](https://mcd.site team.de/wp-content/uploads/2026/06/0c83d6214dc53ef4005a028f8dcfcbea-1.png) ## MCD Elektronik develops test systems for constant-current power supplies in LED modules. Our solutions ensure that LED power supplies operate reliably and consistently, even under demanding HVAC/HVDC conditions. In this way, we help to sustainably ensure the service life, safety, and efficiency of modern lighting systems in applications such as aviation, stadiums, train stations, and television studios. # Challenges and Concept ![](https://mcd.site team.de/wp-content/uploads/2026/07/FCT-LED-power-supplies_mcd-002-1-scaled.png) ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) As part of this project, MCD Elektronik developed and implemented a test and functional verification system for an LED power supply with a constant-current output. The test system is used to automatically test the assembly under realistic HVAC/HVDC conditions and verifies its functionality and stability under high voltages and loads. The test system developed performed electrical functional and endurance tests on LED power supplies. The scope of testing included short-circuit and high-voltage tests, measurement of output power, and analysis of shutdown behavior. A modular adapter and changeover system enabled reproducible testing of various power supply variants with minimal setup effort. The test system enabled the reliable verification of LED power supplies for use in safety-critical applications, including those in the aerospace and defense sectors, as well as in infrastructure and high-performance lighting. # Scope of Testing and Functionality ![](https://mcd.site team.de/wp-content/uploads/2026/07/FCT-LED-power-supplies_mcd-001-1-1024x683.png) ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) MCD Elektronik provides a comprehensive range of tests for constant-current power supplies in LED modules used in safety-critical and high-performance applications—including those in the aerospace and defense sectors, as well as in demanding lighting systems. The test system handles the programming of controllers as well as extensive functional, short-circuit, and high-voltage tests. An integrated oscilloscope is used to analyze and monitor signals and to check the functionality of the LEDs on the assembly. - Programming the Modules - Final Test in the kW Range - Voltage measurements up to 1,000 V - Current Measurements - LED Tests with Blinking Functions - Controlled Discharge - Print Label - Integration of Measurement Data into the MES System Thanks to flexible adapter and interchangeable systems, the test setup can be quickly adapted to different variants. This results in a scalable, future-proof test system that delivers reproducible results and maximum safety. # Test Methods Used and Results ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30132.svg) The HVAC/HVDC test station has a modular design and is specifically tailored to the requirements of constant-current LED power supplies in safety-critical applications. Key components include the TestManager CE test software and various tool monitors for controlling electronic loads, power supplies, interfaces, and measuring instruments. High-voltage multiplexers, power meters, and frequency converters, among other devices, are used for high-voltage testing. The MIO1616 control unit controls the mechanical components for contacting and adapter locking, as well as the operation of the contactors. A high-voltage adaptation system with a flexible interchangeable design allows for the accommodation of various test specimens, while all supply cables are safely routed beneath the work surface. To meet safety requirements, the test system is equipped with independent emergency stop switches and isolation monitors. These monitor the safe operating status and enable the test stand to operate under defined safety conditions, as well as ensure that test sequences are performed in a reproducible manner. ## FREQUENTLY ASKED QUESTIONS ### FAQs How are constant-current LED power supplies tested? Testing is performed using automated test systems that analyze and document the electrical functions, high voltage, current behavior, and safety of LED power supplies. What tests are performed on LED power supplies? The scope of testing includes functional tests, high-voltage and short-circuit tests, performance analyses, endurance tests, and monitoring of the shutdown behavior. What voltages and power ratings does the test system cover? The system tests input voltages up to 600 V, output voltages up to 1,000 V, and power ratings up to 20 kW. Are the tests conducted under real-world conditions? Yes, the test is conducted under realistic HVAC/HVDC conditions in order to validate the behavior of the constant-current power supplies under real-world conditions. Is the test system suitable for various LED power supplies? Modular adapter and interchangeable systems allow for the flexible and efficient testing of different types of LED power supplies. How is safety ensured during high-voltage testing? Safety features such as emergency shutdown, insulation monitoring, and protected contacts ensure a safe testing process. What software is used for the exam? The testing software controls all processes, monitors measurement values, and enables complete documentation of the results. For which industries are these test systems suitable? These solutions are used in safety-critical sectors such as aerospace and defense, industry, and high-performance lighting systems. ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp) ## KEY FACTS Scope of Testing & Test Conditions ### Exam ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### Electronic and Mechatronic Assemblies ### Use of High-Voltage Tests ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### up to 1,000 V ### Services ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### up to 20 kW ### Terms and Conditions ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### Testing under realistic HVAC/HVDC conditions ### Security Features ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### such as emergency shutdown and insulation monitoring System Design & Flexibility ### Modular Test Station ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### with flexible adapter and interchangeable systems ### Checking the Built-in Display ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### with a camera Software & Measurement Technology ### In-house testing software ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### TestManager CE in Action ### Control via MCD Tool Monitors ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### including, among others, electronic load, power supply, multimeter ### Integration of ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### High-Voltage Multiplexers, Power Meters, and Frequency Converters [DOWNLOAD TECHNICAL REPORT](https://mcd.site team.de/wp-content/uploads/2026/07/fachbericht-hf-test-messtec_mcd.pdf) Learn more directly from the HF-Test Messtec technical report DOWNLOAD CASE STUDY Learn more directly from the HF-Test Messtec case study ## REFERENCE PROJECTS [![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-headset-control-units_mcd-001-scaled.png)](https://mcd.site team.de/en/industries/aerospace-defense/eolt-headset-control-units/) EOLT for Headset Control Units