電研精機研究所 List of Products and Services

This is a small, low-cost "Noise Cut Transformer" developed with a focus on general-purpose electronic devices for mass production and portable electronic devices. By utilizing a newly developed noise prevention mechanism (which has been patented), it effectively blocks normal mode noise across a wide frequency range that cannot be prevented by conventional isolation transformers or shielded transformers, thereby significantly improving the noise resistance of the connected devices. Additionally, its wideband common mode noise blocking capability protects the load devices from surges caused by induced lightning. In addition to standard voltage models, we can also produce units with custom voltages upon request, allowing for replacement of the power transformer in connected devices. Furthermore, it can eliminate the need for other noise prevention components such as power filters.

• power supply

Lightning protection + surge-resistant transformer, impulse withstand voltage 30kV, insulation withstand voltage AC 10kV. This is a "Noise Cut Transformer" that is fully equipped with the specifications and performance of a surge-resistant transformer, achieving excellent cost performance and compactness. It also prevents steep overvoltages during lightning surges that cannot be protected by lightning arresters. This is a product registered under the old NETIS.

• power supply

The lightning surge that intrudes into the power line and reaches one coil of the lightning protection transformer first attempts to transfer electrostatically (through capacitive coupling) to the other coil. However, if the transformer has a shielding plate, this can be effectively prevented. Following this, a slower electromagnetic transfer (through inductive coupling) occurs, and there has been no lightning protection transformer equipped with a structure to prevent this; they have relied on added capacitors and varistors, which have been insufficient to protect low-resistance information devices and precision electronics. However, a structure like the "Noise Cut Transformer," which prevents high-frequency magnetic flux from lightning surges from crossing to the secondary side, can also prevent this electromagnetic transfer. The NCT-K type takes advantage of this characteristic, featuring high voltage insulation that withstands lightning surge impacts, excellent shielding with a very low impedance triple structure, and is designed and manufactured to easily direct powerful lightning surges to the ground, almost completely preventing them from escaping to the load side, making it a "Noise Cut Transformer for lightning protection."

• power supply

This is a medium-capacity noise filter transformer that complies with UL standards. It is a model certified under the UL standard for insulation "UL1446" and the UL standards for construction "UL5085-1, UL5085-2." This product can be custom-made to meet your specifications.

• power supply

It is a slim model.

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The coil's positioning is structured in an eccentric axis and eccentric core format, making it particularly effective in high-frequency areas, and it is suitable for achieving a high level of prevention effectiveness. Compared to the NCT-F series, a higher attenuation rate can be achieved. It is designed faithfully according to the principles of noise prevention, featuring a triple shielding body and a robust, low-impedance outer casing, and is constructed with shapes and materials that shield all conductive parts, including terminals and lead wires.

• power supply

This product has been developed through efforts since 1960, revealing what is theoretically the most superior, and has achieved commercialization by improving manufacturing methods and materials (with patents obtained for its structure and manufacturing methods). Its core shape and coil arrangement are of an off-axis eccentric twist, exhibiting outstanding performance from several kHz to GHz. It is mainly used in laboratories, space development, laser-related equipment, precision experimental instruments, and for measuring minute signals.

• power supply

The Noise Isolation AC Automatic Voltage Regulator "Noise Cut AVR" has a long history since our company's founding and boasts high quality and reliability, with almost no complaints from users to date. It is a stabilized power supply (line conditioner) that protects electrical and electronic devices from power troubles such as high-frequency noise, harmonics, voltage fluctuations, and instantaneous power outages within 1/4 cycle, providing ideal power supply. Moreover, the longest-serving units have been in operation for over 45 years, showing no signs of aging in their characteristics. We are also open to consultations regarding compliance with standards such as SEMI. ● For more details, please contact us or download related materials.

• Power Supplies

The Noise Cut UPS PI-N type guards electronic devices from the fear of momentary power outages. It perfectly responds to noise and voltage fluctuations, serving as an uninterruptible power supply that protects your information assets. For momentary outages, it provides perfect backup with its "complete no-break mechanism." Additionally, by incorporating the renowned "Noise Cut Transformer" developed by Denken Seiki Research Institute, it can almost completely block line noise up to ultra-high frequencies. Furthermore, it includes a constant voltage and frequency correction function to adjust voltage fluctuations, waveform distortion, and frequency variations, supplying a clean and stable sine wave. The Noise Cut UPS addresses all power supply troubles related to "momentary outages, noise, and voltage fluctuations." 【Features】 ○ Adopts a complete no-break mechanism ○ Equipped with a noise cut transformer ○ Features high-performance batteries ○ Strong against loads and gentle on power lines ○ Easy operation with ample safety considerations For more details, please contact us or download the catalog.

• Power Supplies

This is an optimal power supply device for EMI measurement, combining a high-efficiency, low-cost inverter-type frequency converter with a noise-cut transformer. It is resistant to external disturbances and provides a stable sine wave power supply free of noise to the test equipment at the required voltage and frequency. It is compact, lightweight, and low-cost, reducing the burden on facilities, easy to operate, and does not incur high running costs such as electricity bills. *For more details, please contact us or download the catalog.*

• Power Supplies

We would like to introduce a case of equipment malfunction that occurred at a certain pharmaceutical manufacturer, Research Institute C. "We want to operate the centrifuge continuously for 8 hours, but the machine stops at night." "Although we just introduced the analytical device, for some reason, there is damage to the internal circuit board." We requested each equipment manufacturer to investigate the causes of these malfunctions and prevent recurrence, but since the cause could not be identified, we were asked to provide the best solution. We considered the possibility that high-frequency noise was the cause of the current malfunction and proposed the introduction of high-frequency noise countermeasure products that could be implemented at a lower cost than a stabilized power supply, providing a trial unit of the product. [Overview] ■ Client: Certain Pharmaceutical Manufacturer, Research Institute C ■ Request Details - Please investigate why the equipment is malfunctioning. - Is the introduction of a stabilized power supply the best choice? Please provide your opinion. ■ Results - Proposed the introduction of high-frequency noise countermeasure products that could be implemented at a lower cost than a stabilized power supply and provided a trial unit. - The high-frequency noise countermeasures resolved the issues, leading to stable operation of the research equipment.

• Transformers

Our "Noise Trouble Consultation Room" was established in 1983 as a specialized technical department for noise trouble measures. Since then, we have received consultations on various noise issues amounting to 3,000 cases annually and have worked on their resolution. To date, we have accumulated a vast number of achievements and rich experience, receiving significant recognition from various sectors.

• power supply

We have prepared materials on general knowledge about noise countermeasures, as well as methods for dealing with specific types of noise such as inverter noise and lightning.

• power supply

General-purpose inverters have made remarkable advancements as variable speed devices that enable energy saving for industrial motors. However, as the number of installations increases, the noise generated by the operation of inverters adversely affects surrounding electronic devices, becoming a factor in various problems. With the theme of "Inverter Noise Issues," we will explain the generation principles and specific countermeasures in an easy-to-understand manner. Additionally, we will introduce several case studies of troubles caused by noise. Please make use of this information for preventive measures against noise issues. 【Introduction to Countermeasures Lineup】 ○ Solve it! Introduction to Inverter Noise Countermeasures ○ Basic Knowledge of Noise and Countermeasure Techniques ○ Understand it! Reintroduction to Noise Countermeasures ○ Noise Trouble Case Studies (6 cases) ● Please download the catalog to view the materials.

• inverter
• Other electronic parts