The product catalog has been updated: AC Electronic Load 63800 Series.

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

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

High-performance stabilized AC power supply with excellent cost performance.

The 61600 series is a stabilized AC power supply that combines low cost, multifunctionality, and convenience. The output voltage variable range is 0 to 350 VAC, and the frequency variable range is 15 to 2000 Hz. By adopting PWM technology, it is capable of delivering a peak current that is six times the rated current.

• Power Supplies

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 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

Thank you very much for your continued support. We, at Marpos Co., Ltd., regret to inform you that we will be closed during the following period. Closure Period: From Saturday, April 25, 2026, to Wednesday, May 6, 2025. Inquiries received during the closure period will be answered sequentially after Thursday, May 7. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about the business hours during the GW period, as well as order, shipping, and support services. Please download the PDF to check the schedule. ■ Regarding Orders 1) Orders can be placed at any time on the 【FOSS WEBSHOP】. Stock will be prioritized. 2) Please specify your "desired delivery date" when placing an order. 3) Due to expected high order volume and shipping delays before and after the holiday, please make your requests with ample time. ■ Regarding Customer Support For any malfunctions or issues during the holiday... Customers with maintenance contracts should contact the dedicated number for after-hours support. Other customers can reach us via email. Please provide details such as "model name," "serial number," "symptoms," and "contact person's name." Our customer support will contact you in the order of receipt. E-Mail: service@foss.co.jp

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitch Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

SPACECOOL Inc., which researches, develops, and sells the radiation cooling material "SPACECOOL" that releases heat into space to achieve zero-energy cooling, will exhibit at the "Jumbo Surprise Exhibition," a comprehensive trade fair for electrical materials and housing equipment, held at Tokyo Big Sight from April 17 (Friday) to April 18 (Saturday), 2026, and at Intex Osaka from April 24 (Friday) to April 25 (Saturday), 2026. This material is a new technology that enables zero-energy cooling by converting heat into infrared radiation and releasing it into space, without using any external power. By implementing it in outdoor air conditioning units and outdoor electrical equipment, it helps suppress internal temperature rises, contributing to stable operation of devices and reduction of air conditioning energy consumption, and is being recognized as a new carbon-neutral technology. Its energy-saving performance has been acknowledged, and this material received the 2025 Energy Conservation Award. When you visit the venue, please stop by our booth. Our booth number is 972 (common for both Tokyo and Osaka). We will continue to work towards expanding the social implementation of SPACECOOL to contribute to the stable operation of outdoor equipment and air conditioning units, as well as to reduce air conditioning energy consumption and CO2 emissions.