We will be exhibiting at Techno Frontier 2013 [Power Supply System Exhibition].

A DC electronic load that can simulate LED electrical characteristics in a module + mainframe configuration.

The LED driver supplies the energy that serves as the light source for the LED and is designed as a constant current source for the LED. The characteristics of an LED driver differ from those of a typical switching power supply, but the structure is very similar. To evaluate an LED driver, it is possible to perform operational checks using actual LEDs, resistors, and electronic loads with CR/CV modes, but it can be challenging to meet the testing conditions. When evaluating an LED driver with a resistor, the relationship between voltage and current becomes linear, as shown by the blue line, which does not fully utilize the characteristics of the LED. When using a DC electronic load with CR/CV modes, it is desirable for both CR and CV modes to operate stably. However, during LED ON/OFF tests or dimming tests, the protection circuit of the LED driver may cause instability in the operation of the electronic load, posing a risk of not being able to conduct the tests successfully. Using actual LEDs as a load can lead to degradation issues over long-term use and requires significant labor to test various types of LED drivers. Chroma has prepared the 63110A/63113A/63115A, based on the 6310A series, to solve the testing issues for LED drivers.

• Electronic Load Unit

DC electronic load with a module + mainframe structure. Multi-channel type, high precision, high output, equipped with constant impedance mode.

The 63600 series is designed to test multi-output AC/DC power supplies, DC-DC converters, mobile phone chargers, batteries, PC adapters, and power electronics products, making it suitable for applications such as research, development, production, and acceptance testing. It features a CZ (constant impedance) mode that simulates capacitive loads and can also emulate nonlinear loads. The minimum operating voltage is (0.4V @ 80A Typical, 63640-80-80), allowing it to draw rated current even at low voltages, making it suitable for applications requiring low voltage, such as fuel cells. Additionally, it meets the testing requirements for ATX power supplies by providing extensive simulation capabilities for dynamic loading applications. The built-in EEPROM memory allows for the immediate recall of 100 sequences of stored data for testing. The 16-bit measurement circuit performs real-time voltage and current measurements, enabling voltage measurement, adjustment, and short-circuit testing to be simulated through both the front panel and software via a PC.

• Electronic Load Unit

A high-performance multifunctional AC power supply ideal for various power environment simulations and IEC standard tests.

The 61500 series is a high-performance AC power supply equipped with the capability to simulate phenomena such as abnormal voltage surges, drops, and short circuits in power line disturbance (PLD) simulations. By utilizing the software, it is possible to conduct international standard tests IEC61000-4-11/4-13/4-14/4-28, and inrush current tests can also be performed through phase control during ON/OFF operations. This power supply can be used in a wide range of fields, from R&D testing based on various standard tests to automated testing systems on production lines.

• power supply

A compact high-power DC power supply with a height of 3U and a power density of 15kW.

The 62000H series is optimal for simulation testing of electrical equipment implemented in hybrid vehicles, solar panels, communication devices, ATE, industrial products, battery chargers, and more. It features a lineup of 13 models, achieving a 15kW capacity in a 3U size with high power density implementation. It can output high-precision feedback of current and voltage, as well as external analog signals for operating modes. It is capable of simulating complex transient load waveforms, including voltage spikes, drops, and voltage deviations. Using external analog control, it allows for editing up to 10 programs and 100 sequences with an automatic sequencing function. It also supports automatic test execution for test ON/OFF. Standard interfaces include USB/RS-232/RS-485/APG (standard), with optional interfaces for GPIB or Ethernet, enabling easy operation from external sources through these interfaces.

• power supply

AC electronic load with optimal power factor and crest factor for three-phase output product applications.

The 63800 series is suitable for testing power devices such as uninterruptible power supplies (UPS), off-grid inverters, AC power sources, switches, and breakers. Even when the voltage waveform is distorted, the 63800 series can simulate load conditions with high peak factors and varying power factors while performing real-time corrections. This capability allows for real-world simulations, yielding reliable and unbiased test results. Additionally, using DSP technology, it can simulate nonlinear rectifier loads through a unique RLC operating mode. In this mode, it detects the DUT's impedance and dynamically adjusts the control bandwidth of the load to ensure system stability. The comprehensive measurement capabilities of the 63800 series allow for monitoring the output characteristics of the DUT. Furthermore, voltage and current signals can be verified on an oscilloscope via analog output. Standard interfaces such as GPIB and RS-232 are used for remote control and measurement data transfer for system integration. Additionally, the built-in digital output can be used to control external relays for short-circuit (crowbar) testing.

• Electronic Load Unit

Automatic inspection system specialized for LED driver and DC power supply testing.

The ATS 8491 LED Driver Automatic Testing System is a specialized system for testing LED power supplies. It can test multiple DUTs (Devices Under Test) simultaneously, significantly improving the efficiency of production line operations. Furthermore, this testing system allows for the flexible combination of various hardware components such as AC power supplies, DC power supplies, power meters, PCI interface cards, sensor units, and sensor modules. The electronic load used in this system is a dedicated electronic load that can simulate the electrical characteristics of LED drivers. The 8491 is equipped with a variety of test items for the V-I characteristics of the device under test, allowing for easy execution of tests simply by inputting the test conditions and parameters. It supports a Windows-based OS, eliminating the need to prepare a special OS for electrical characteristic testing.

• Environmental Test Equipment

Multi electrical safety tester for winding components such as motors, transformers, and heaters.

The quality inspection of winding components includes AC withstand voltage tests, DC withstand voltage tests, insulation resistance tests, and pulse tests for winding components. The 19035 can conduct safety standard tests for products such as motors, transformers, and heaters, effectively performing quality inspections. It is equipped with high voltage outputs of AC 5kV/DC 6kV, meeting the withstand voltage test standards for winding components, with a maximum output current of up to 30mA. The insulation resistance test can measure within a range of 0.1MΩ to 50GΩ, with an output voltage of up to 5kV. The DC resistance test can confirm connections before conducting safety standard withstand voltage tests, in addition to measuring winding components, and is further equipped with functions such as electrical flashover and open/short detection. The reliability of tests is enhanced by programmable output voltage and time parameters tailored to the characteristics of different test objects.

• Testing Equipment and Devices

A voltage tester equipped with high voltage withstand capability, breakdown voltage, and flashover detection functions.

The pressure resistance test specifications for the 19055 are AC 5kV/100mA (AC 4kV/120mA), DC 6kV/20mA, and the insulation test specifications range from 0.1MΩ to 50GΩ, making it a testing device capable of meeting the requirements for high-power pressure resistance insulation tests. The 19055-C, in addition to basic AC pressure resistance, DC pressure resistance, and insulation resistance tests, is equipped with newly developed features such as a corona discharge measurement function that can detect corona discharge phenomena, breakdown voltage (BDV) measurement, and programmable voltage rise functionality.

• Testing Equipment and Devices

An automatic inspection system specialized in safety standard testing for electrical products and medical devices.

The 8900 has sufficient performance to conduct safety standards and specific tests for electrical products. It is possible to integrate measuring instruments into the system according to the different testing needs of each product. The software adopts an open architecture structure, allowing for different measurement methods for each item being measured, and enabling flexible configuration of test items, processes, and parameters. Furthermore, it is equipped with an extension function for measurement items, allowing for the extraction of necessary measurement items from the results and the editing of reports. The 8900 can significantly improve measurement speed by avoiding redundant control commands through its unique measurement command technology. As a highly efficient automatic inspection system, it offers excellent scalability of measurement data through its superior measurement editing capabilities, along with statistical analysis and data management functions.

• Testing Equipment and Devices

A DC power supply with a wide output range that can also operate at high capacity.

The 62000P series is a DC power supply that can be used for a wide range of applications, including testing DC-DC converters and integration into automated inspection systems. It has a broad range of constant power output and can measure voltage and current with high precision. Additionally, its unique DC transient waveform generation function allows for the simulation of voltage dropouts, spike voltages, voltage interruptions, and other voltage fluctuations on devices, making it suitable for testing aerospace products and evaluating inverters. It is equipped with not only measurement timing output trigger signals for the system but also 8-bit I/O (TTL), allowing for external output ON/OFF control and protection circuit detection. It is ideal for applications such as voltage drop testing of DC-DC converters and inverters, engine start simulations, battery charging, and lifespan testing of electronic devices.

• Power Supplies
• Other electronic measuring instruments

A low-cost, compact DC power supply capable of simulating changes in sunlight and time series variations of solar cells, as well as evaluating MPPT characteristics.

One of the most anticipated uses as a next-generation energy source is solar power generation systems. The efficiency of converting the direct current voltage/current generated from solar panels depends on the performance of the power conditioner. However, the power generation efficiency of solar panels is influenced by actual weather conditions, making it difficult to evaluate their performance. To enable testing of power conditioner performance without being affected by real weather conditions, Chroma has provided a DC power supply with a solar array (solar cell) simulation function. This allows for simulation not only of changes in sunlight due to morning, noon, and evening, as well as sunny, cloudy, and rainy conditions, but also of temporal changes. It meets the needs for not only testing the MPPT characteristics of power conditioners but also simulating sunlight variations due to regional differences.

• Power Supplies

Grid simulator capable of testing PCS, smart grid, and EV-related products, 100% bidirectional AC power supply supporting reverse power flow.

Currently, there is growing demand in the market for PV inverters, wind power generation systems, and other renewable energy sources. This demand requires various standard specifications such as IEEE 1547 / IEC 61000-3-15 / IEC 62116 for on-grid products, as well as appropriate and safe verification testing. The 61800 series is a bidirectional regenerative AC power supply that utilizes four quadrants. It meets a wide range of needs not only in product development but also in quality assurance and production. The 61800 series adopts full four-quadrant regenerative operation, making it a programmable AC power supply designed for testing general electrical products such as home appliances and industrial electronic devices. Additionally, it has been designed to simulate the characteristics of the grid, such as power conditioners (PV inverters), inverter power supply, and UPS. It can support both sink and source applications from the unit under test (UUT). In this case, the source current detection circuit of the UUT senses surplus power, which is then reused (regenerated) back into the grid.

• power supply

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).