The 28V DC power supply is a power product integrating technical and control levels. It utilizes a soft-switched inverter technology with new IGBT power devices and amorphous magnetic cores as the core components. The power supply offers high precision in output voltage and current, and can detect and display its operating mode, facilitating user operation.
The power supply boasts excellent electrical characteristics such as high accuracy, high stability, and strong reliability, making it suitable for research institutions, laboratories, and similar settings. It features continuous adjustability and can be used for product aging tests and production line inspections. The power supply is equipped with comprehensive protection and remote control functions, facilitating user control and significantly enhancing production efficiency. The JFD series programmable DC regulated power supply comes with a remote control interface and is available in cabinet and standard rack types. Additionally, the company has robust research and development capabilities, enabling customized development to meet various customer needs and offering supervisory software for user convenience.
The 28V DC power supply features rapid dynamic response, low output ripple, and strong overcurrent capability. It boasts lightweight, compact size, low noise, high efficiency, and simple operation. It is applicable to the manufacturing, testing, and maintenance of aviation equipment, radar, navigation, and other electronic devices, as well as in industrial and mining enterprises, university laboratories, research institutions, and electrical product production lines.
Product Features:
1. Voltage and current regulation. Equipped with high-precision encoders and digital keypad operation, voltage and current can be adjusted from zero to the rated value, with pre-set output voltage and current values. The product can operate in either constant voltage (CV) mode or constant current (CC) mode, with automatic mode switching and LED indicators for the mode status. When the CV-LED is on, the power supply is in CV mode, and when the CC-LED is on, the power supply is in CC mode.
2. High precision, low ripple. This DC power supply employs peak current control, featuring good load and power regulation rates, with high precision in output voltage and current. Equipped with multi-stage filters, the output ripple is low.
3. Efficiency. High-level soft-switching technology ensures a power efficiency, low noise, and high reliability; the overall efficiency exceeds 95%.
4. Comprehensive protection features. The power supply is equipped with an overload protection circuit, ensuring the normal operation of the power supply equipment and the safety of the load.
5. Output Display. Voltage and current are displayed using a high-precision LED digital meter.
6. Digital Control. Full digital control allows for voltage and current to be programmed digitally; all calibrations are digital, ensuring stability and reliability.
7. Remote Control Function. Equipped with an RS485 interface, the power supply can communicate with computers via MODBUS protocol. Supports multi-machine communication, stable and reliable. Computers can remotely monitor all parameters and statuses of the power supply. The supervisory computer can remotely set parameters and control functions with authorization.
Technical Advantages:
Jinfei specializes in the research and production of high-power programmable DC voltage regulators based on high-frequency soft-switching technology. After more than a decade of development and experience accumulation, we were the first to commercialize DC power supplies with full-load range ZVZCS soft-switching technology. Our programmable DC voltage regulators are highly reliable and deeply trusted and recognized by users. Our programmable DC voltage regulators have the following outstanding advantages:
High performance - user-friendly
This DC power supply utilizes peak current control and employs a wideband, high-gain, low-noise OPAMP. Therefore, it offers rapid dynamic response and high output voltage stability accuracy under abrupt load changes. Additionally, it is equipped with multi-stage filters, meeting EMI/EMC standards EN61000-6-3 and EN61000-6-1, with low output ripple.
High reliability — worry-free
Key components are imported, featuring original Siemens Infineon IGBT modules, U.S.-based UNITRODE control chips, mature soft-switching technology, and comprehensive protection circuits (short-circuit protection, current limiting protection, overheat protection, overvoltage protection, and overcurrent protection) to ensure reliable IGBT operation.
High efficiency – cost-saving
Equipped with ZVZCS soft switching technology for high power factor, low noise, and high reliability; overall efficiency exceeds 85%; whereas domestic manufacturers' high-power DC power supplies are mostly stuck in hard switching and silicon-controlled rectifier technologies, resulting in poor reliability. Our DC power supplies can save users a significant amount of electricity costs annually.
High power density — space-saving
Due to the use of scientific soft switching conversion technology, it boasts high quality, compact size, light weight, high power density, and space-saving design.
High switch frequency - quiet
Due to the device's switching frequency being above 24kHz, it is out of the human auditory range, ensuring no bothersome noise. Additionally, the noise-suppression technology adopted creates a quiet and comfortable working environment.
This product is developed with German Siemens IGBT and nanocrystalline magnetic cores, featuring high precision, excellent stability, and durability. It can also be custom-made to meet customer specifications.
