Bekalan kuasa DC are indispensable in semiconductor testing, new energy vehicle R&D, dan automasi perindustrian. Their technological evolution is driving a comprehensive upgrade of the test and measurement industry toward high precision, programmability, and intelligence. According to industry research data, the global programmable DC power supply market continues to grow, reaching approximately RMB 4.997 bilion dalam 2025, and is projected to reach RMB 7.08 billion by 2032. The Chinese market is growing even more significantly, having reached RMB 1.66 bilion dalam 2025. Driven by the rapid development of the new energy vehicle industry and sustained demand for semiconductor testing, the application boundaries of DC power supplies are constantly expanding, evolving from basic power supply equipment into intelligent test platforms integrating digital control, remote programming, and multi-mode output.
Technical Principles and Product Types
The core function of a DC power supply is to convert AC power or other forms of energy into stable, controllable DC power, providing reliable power support for various electronic devices and systems. Based on different output characteristics, DC power supplies can be classified into constant voltage power supplies (output voltage stable, current varies with load), constant current power supplies (output current stable, voltage varies with load), constant voltage constant current power supplies (automatically switching operating modes), and programmable DC power supplies (precisely controlling output parameters via digital interfaces and supporting waveform programming). Programmable DC power supplies, with their advanced features such as digital control, remote communication, and multi-mode output, have become standard configurations in laboratories and production lines. In terms of energy conversion technology, DC power supplies cover various topologies including linear and switching power supplies, among which linear DC power supplies maintain an important position in precision testing due to their ultra-low ripple and high accuracy.
Core Application Areas
The application landscape of DC power supplies is expanding rapidly. Dalam industri kenderaan tenaga baharu, DC power supplies are widely used for DC/DC converter testing, on-board charger testing, and power battery charge/discharge testing. Specialized DC test power supplies can simulate different charging and discharging curves, providing stable current and voltage for batteries. Contohnya, in lithium-ion battery R&D, by setting the output parameters of the DC test power supply and performing charge testing following a constant current-constant voltage charging mode, researchers can precisely control the charging current and voltage, thereby evaluating the battery’s charging speed and performance. In the semiconductor manufacturing field, programmable DC power supplies are used for chip characterization, circuit board burn-in screening, and low-power IoT device testing. In the photovoltaic and energy storage field, DC test power supplies can simulate the IV characteristic curves of photovoltaic arrays, providing a reliable testing environment for inverter R&D and energy storage system verification. In the military and aerospace field, DC power supplies require extremely high reliability and wide voltage/current adjustment ranges, used for power-on testing of critical equipment such as missile fire control systems and satellite ground test equipment.
Kriteria Pemilihan Utama
When selecting a DC power supply, it is recommended to systematically evaluate the following dimensions. Pertama, power matching – calculate the required power as maximum voltage multiplied by maximum current, then add a 20% margin. Choose a power supply with rated power ≥1.2 to 1.5 times the load power, reserving sufficient margin. Kedua, confirm output modes – verify whether the power supply supports both constant voltage and constant current modes, and whether it has multi-channel parallel output capability to meet batch testing requirements. Ketiga, accuracy and stability – pay attention to voltage accuracy, current accuracy, load regulation, and transient response time, as these directly determine the reliability of test data. Keempat, communication and control interfaces – check for remote programming interfaces such as USB, LAN, RS-232, BOLEH, and GPIB to enable seamless integration into automated test systems. Kelima, protection functions – confirm the presence of multiple protection mechanisms such as overvoltage, lebihan arus, and overtemperature to ensure the safety of both equipment and the device under test. Selain itu, in the context of increasing energy efficiency requirements, bidirectional DC power supplies with energy regeneration capability can feed test energy back to the grid, significantly reducing energy costs, making them an important selection trend in the new energy testing field.
As fundamental equipment in modern electronics manufacturing, ujian semikonduktor, and the new energy industry, DC power supplies are driving a comprehensive upgrade of the test and measurement industry toward high precision, programmability, and intelligence. Shenzhen Jetronl Instruments Co., Ltd., LTD. (Jetronl), ditubuhkan pada 1993, ialah pembekal komprehensif yang menyepadukan R&D, pengeluaran, and sales of power supplies and electronic measuring instruments.