In research scenarios such as visible-near infrared spectroscopy analysis, optical device calibration, material transmission and reflection detection, long-term light aging experiments, and university spectroscopy teaching, the core causes of experimental errors in halogen tungsten lamps often are not the lamp wick and optical path defects, but rather unstable power supply current, large fluctuations in luminous flux, color temperature drift, and significant long-term temperature drift. Ordinary general-purpose power supplies have high ripple and insufficient constant current accuracy, which easily cause fluctuations in the output energy of the light source and deviations in the spectral curve, resulting in distorted weak signal acquisition, poor repeatability of experimental data, inconsistent batch detection standards, and severely restricting the accuracy and reliability of precise spectroscopy experiments.

The Sefan Optoelectronics 7IPT series halogen tungsten lamp power supply is a research-grade high-precision constant current drive power supply specially adapted for the 7ILT full series of halogen tungsten lamps. As the core power supply heart of the halogen tungsten lamp system, it relies on precise linear constant current technology, ultra-low fluctuation output, intelligent temperature control protection, and all-working condition stability architecture. With the core advantages of extreme constant current, stable light without drift, lamp protection for extended lifespan, and wide adaptability, it locks the output accuracy of the light source from the power supply root, completely solving the drift problems of conventional power supply equipment. It is the official standard power unit of the visible-near infrared reference light source system.

Precise constant current, ultra-low luminous flux fluctuation, highly data reproducibility

The 7IPT series abandons the high-frequency ripple and dynamic instability defects of ordinary switching power supplies, adopts a fully linear closed-loop constant current control architecture, is equipped with real-time current feedback correction algorithm, and dynamically compensates for output deviations caused by voltage fluctuations and temperature drift. When the lamp is working with the halogen tungsten lamp system, the luminous flux fluctuation is as low as 0.12%?0.2%, far exceeding the industry's general standards. After 8-hour long-term continuous steady-state testing, there is no significant deviation in light intensity, color temperature, and spectral energy distribution, and the baseline is straight without jumps. It perfectly adapts to strict experimental conditions such as near-infrared weak signal acquisition, long-term spectroscopy monitoring, and high-precision component calibration, completely eliminating data dispersion and experiment invalidation caused by unstable power supply, ensuring that each set of research data can be accurately traced back and highly reproducible.

Precise color temperature locking, excellent full-spectrum consistency throughout the process

The spectral distribution and color temperature of halogen tungsten lamps are highly dependent on the accuracy of power supply current. Even a slight current deviation can cause spectral line shifts and near-infrared energy attenuation. The current output of the 7IPT series power supply has extremely high linearity, can precisely match the working parameters of the 7ILT full series of halogen tungsten lamps, and stably locks the standard color temperature range of the lamp at 2900K?3200K. During the full lifespan of the lamp, it continuously ensures that the luminous flux retention rate remains at 95%?98%, effectively avoiding problems such as high initial brightness, rapid decay, and spectral distortion caused by ordinary power supply. There is no need for frequent shutdown and parameter calibration, significantly improving the efficiency of batch experiments and long-term monitoring.

Flexible start-stop protection design, long-term lamp protection and cost reduction

To address the pain points of frequent start-stop of halogen tungsten lamps and their easy wear during long-term continuous operation, the equipment is equipped with an intelligent flexible start-stop buffering mechanism. There is no instantaneous current spike or high-voltage impact when starting, and it starts smoothly and rises steadily. This reduces lamp core cold-hot shock losses from the source and effectively extends the lifespan of the halogen tungsten lamp, significantly reducing the cost of laboratory consumables replacement and maintenance frequency. At the same time, it is equipped with multiple safety protection mechanisms such as overcurrent, overvoltage, overheat, and short circuit, automatically disconnecting in abnormal conditions to protect the equipment from burning out, lamp damage, and experiment interruption. It is suitable for 7×24-hour uninterrupted continuous work and frequent start-stop regular research conditions in laboratories. The device has a compact structure and a small size, which does not occupy the space of the optical platform. It operates with low noise and no electromagnetic interference, and will not affect the normal operation of surrounding detectors, spectrometers, and other precision optical equipment. It is suitable for stable operation in various scenarios such as high-precision laboratories, industrial inspection workshops, and teaching laboratories.

Exclusive full-range compatibility, quickly build a standardized spectrometer system

The 7IPT series is the exclusive power supply for the 7ILT series of halogen tungsten lamps of Sevan. It precisely matches the power ratings of 75W, 100W, and 250W and does not require additional calibration. It can be installed and used immediately with zero deviation. It can seamlessly connect with monochromators, double-grating spectrometers, integrating spheres, and fiber optic testing systems, quickly building a stable light source + precise spectroscopy + accurate detection integrated visible-near-infrared spectrometry testing platform. The system has full compatibility, adaptability, and stability, and is the core supporting equipment of the standardized spectrometry experimental system.

Simple and intelligent operation, suitable for all scenarios of research and teaching

The equipment is equipped with a simple human-machine interaction panel, supporting precise current adjustment, real-time visualization of working status, intelligent self-check for faults, and simple and understandable operation. It takes into account both the professional scientific research precise control and the practical needs of university teaching. It can meet high-precision steady-state tests for cutting-edge research, and also adapt to general scenarios such as basic optical teaching, experimental demonstrations, and routine industrial quality inspection, combining professionalism and practicality.

0.12% ultra-low luminous flux fluctuation | Linear closed-loop stable current | Precise color temperature locking | Flexible start-stop lamp protection for extended lifespan | Intelligent temperature control protection | Exclusive full-range light source compatibility

Spectroscopic accuracy begins with the power supply base. The 7IPT series of halogen tungsten lamp power supplies of Sevan, with precise stable current technology, lay a solid foundation for near-infrared spectrometry experiments. With ultra-stable power supply output, it eliminates lamp drift errors and continuously empowers high-quality implementation of precise spectroscopy research, optical calibration, and teaching experiments!