エヌエフ回路設計ブロック List of Products and Services

We meet the needs for AC power in a wide range of fields, including home appliances, electronic components, industrial equipment, medical devices, housing equipment, and amusement machines. ■Stable output ■High efficiency ●Single-phase 2kVA ●Frequency: DC, 1 Hz to 550 Hz ●AC output: 0 Vrms to 350 Vrms ●DC output: 0 V to ±454 V ●Current limiter function ●Protection function ●Measurement function ●Parallel connection of 2 units (single-phase 4kVA) *For more details, please refer to the PDF document or feel free to contact us.

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Maintaining the stable output performance of the DP series, it supports capacity expansion and multi-phase configuration through multiple connections. By simply connecting a single-phase 2 kVA, 3U model with a system cable, system upgrades are possible. Expansion and reconfiguration are easy. ● Flexible system construction Single-phase 2kVA / 4kVA / 6kVA / 8kVA / 12kVA / 18kVA Single-phase 3-wire 4kVA / 8kVA / 12kVA Three-phase 6kVA / 12kVA / 18kVA ● Wide bandwidth DC, 1 Hz to 5 kHz ● AC output 0 V to 350 Vrms DC output 0 V to ±454 V *For more details, please refer to the PDF document or feel free to contact us.

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Equipped with the performance and functions necessary to easily output various waveforms required in measurement and testing environments. The oscillation frequency ranges from 0 to 60 MHz (WF1983/WF1984) / 0 to 30 MHz (WF1981/WF1982), enhancing the reproducibility of tests with low distortion, high-quality waveforms. In addition to the main output, it features a sub-output capable of independent waveform output, a rich variety of output waveforms including double pulses used for power device evaluation, diverse oscillation modes, and sequence functions to support waveform output. 【Features】 ■ Oscillation frequency: 0 to 60 MHz (WF1983/WF1984) / 0 to 30 MHz (WF1981/WF1982), resolution: 0.01 μHz ■ High amplitude resolution: 16-bit, amplitude setting: 21 Vp-p/open ■ Output waveforms: sine wave, square wave, pulse wave, ramp wave, noise, DC, and 26 types of "parameter-variable waveforms" ■ Low distortion, jitter ■ Sub-output function ■ Parameter-variable waveforms ■ Variable pulse edge *For more details, please refer to the PDF document or feel free to contact us.

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We have made it possible to conduct various tests related to high-voltage receiving equipment and cogeneration facilities, which were previously carried out by combining multiple models, in a single unit. This can be utilized for protection function tests in commercial facilities, office buildings, and factories. In addition to being compact and lightweight, the design takes actual work conditions into consideration, aiming to improve the workability at maintenance sites. 【Features】 ■ Voltage: 2 phases (up to 300V per phase), Current: 2 phases (up to 31A per phase) Diverse outputs from single-phase to three-phase three-wire (V connection), and unbalanced two-phase ■ Equipped with a microcurrent output range of 20mA (resolution 0.001mA) ■ Easy digital setting for high-accuracy amplitude, phase, and frequency output ■ Built-in counter allows for operation time measurement ■ Supports various protection relay tests Over/under voltage, over/under frequency, short-circuit direction, under power, reverse power, field loss, earth fault overvoltage, earth fault overcurrent, earth fault direction, overcurrent, ratio differential, phase loss/reverse phase ■ CB interlocking tests possible with two-phase current in series ■ Usable with generator sets (inverter type) and portable power supplies *For more details, please refer to the PDF document or feel free to contact us.

• Information and communication equipment and infrastructure

A system that analyzes AE signals by combining measuring devices and measurement/analysis software. It is equipped with two types of application software to analyze "continuous AE signals" generated by friction and wear, as well as "spike AE signals" caused by cracks and damage. We offer the 2-channel AE9702S, AE9702, and the 1-channel AE9701.

• Other measuring instruments

In addition to its large capacity and high power, this distortion-free relay tester is equipped with output switchers and DC outputs, demonstrating excellent performance in various testing scenarios.

• Analysis and prediction system

A noise filter transformer is a transformer that blocks noise propagating through commercial power lines. It effectively works against noise entering in both normal and common modes, has a wide stop frequency range, is bidirectional, and does not require impedance matching. There are two types available: 500VA and 1000VA.

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This is an AC voltmeter that accurately indicates the true effective value. The M2170A has a wide bandwidth of 5Hz to 20MHz, while the M2174A/M2177A features ultra-high sensitivity with full scales of 10μV/30μV, and they are equipped with various auditory correction filters, allowing them to be used as noise meters. They meet the needs of analog meter-type measuring instruments for noise measurement in the development and production of digital AV equipment and electronic musical instruments, as well as in the development, production, and maintenance of railway signal systems.

• Other analytical equipment

This is a high-precision, high-functionality, low-cost function generator that adopts the DDS (Digital Direct Synthesis) method. It achieves a wide bandwidth of 0.1mHz to 2MHz and can output various standard waveforms and arbitrary waveforms with high accuracy. Additionally, it is equipped with a variety of oscillation modes including trigger/gate/burst, a USB interface, and a power input compatible with worldwide standards.

• Other measuring instruments

The AE9501B is used in combination with a piezoelectric AE sensor (sold separately). When AE is detected, the event lamp of this device lights up. It is a lightweight handheld AE tester that operates on four AA batteries.

• Other analytical equipment

They are lined up according to resonance frequency, shape, and other factors. Generally, the resonance frequency of the sensor is brought closer to the frequency of the AE signal to improve sensitivity.

• Other analytical equipment

A preamplifier that amplifies to the necessary level for analyzing AE signals. Four models are available, featuring different frequency ranges, input formats, and fixed/switchable gain types.

• Other analytical equipment

The 4500 series is a wideband, high-output precision power amplifier capable of outputting up to ±200V from DC to 20kHz. Four models are available with output voltages ranging from 250VA to 2kVA, and by using boosters, it can be upgraded to 10kVA (single-phase) for every 2kVA. It is suitable not only as a power amplifier but also as a simulation power supply and AC power supply, accommodating various applications including power environment testing.

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The 3620 series is a two-channel frequency-variable filter that allows you to freely set the cutoff frequency. You can choose from four types of lineups based on the attenuation slope and cutoff frequency range. It operates independently in two channels, allowing you to switch between low-pass, high-pass, band-pass, and band-elimination modes, and it also supports cascading of the two channels.

• Other measuring instruments

The 5325 is a wideband, low-noise, high-gain, high-voltage isolation amplifier with electrically isolated input and output. It is suitable for signal detection at high voltages, interfacing between devices with different reference potentials, and noise prevention measures for measurement instrument inputs against external noise (ground separation).

• Other measuring instruments

The 5307 is a low-noise preamplifier with a differential input format that has a wide bandwidth of DC to 10MHz and a maximum gain of 1000 times. It integrates necessary functions for amplifying small signals, such as input format switching, offset cancellation, and bandwidth-limiting filters, making it suitable for a wide range of applications as a general-purpose preamplifier or differential amplifier.

• Other measuring instruments

High-accuracy voltage and current measurement, capable of up to 4 inputs, power multi-meter. Seven items: voltage, current, active power, apparent power, reactive power, power factor, and phase.

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It is a three-phase distortion-free relay tester. Output capacity is 100 VA per phase in the 125 V range. In addition to AC output, it also provides DC output.

• Other measuring instruments

The FRA5014 is a 4-channel input servo analyzer designed for integration into production lines and systems. It is exclusively for remote control, and operations such as parameter settings, readings, and command inputs are performed via a PC. It provides high-precision and reliable measurements in various fields, including electronic circuits, components, materials, electrochemistry, and mechanics, starting with the measurement of resonance characteristics of servo loop components, as well as various servo characteristic measurements and electrochemical impedance measurements.

• Other analytical equipment

The FRA5022 is a frequency characteristic analyzer with a measurement frequency range of 0.1 mHz to 100 kHz. Its operation is simple and user-friendly, and its slim, space-saving design makes it suitable for production lines and system integration. The frequency characteristic analyzer (FRA) utilizes the excellent noise reduction characteristics of the digital Fourier integral method to measure the frequency response of the subject under test with high precision. It is used in a wide range of applications across various fields, including the evaluation of stability in servo systems and switching power supplies, as well as AC impedance measurements of fuel cells, covering electronic circuits, electronic materials, machinery, and electrochemistry.

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Isolation / Supports maximum input voltage of 600V CAT II / 300V CAT III. Compared to conventional models, it is capable of measuring higher voltage signals. Additionally, it is equipped with various new features that enhance work efficiency, such as a marker search function for easily retrieving measurement values and a sequence measurement function that reads the contents of the setting memory in numerical order for sweep measurements.

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The ES series is a programmable AC power supply that can flexibly construct various power systems ranging from single-phase 2kVA to three-phase 90kVA*. With our long-standing linear amplifier-based power control (linear power control), we provide fast and high-quality power. It also supports the fast response and harmonic superposition required for EMC testing, as well as the reverse flow necessary for power conditioner (PCS) grid interconnection testing, allowing for tests that meet the conditions required for standard and certification tests.

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The WS series is a signal generation module capable of producing high-accuracy and high-stability signals over a wide range of frequencies. It features a lineup of four models, with two multifunctional types capable of arbitrary waveform output, as well as supporting modulation and sequence operations. The two models with 36-pin DIP can output multi-phase signals through inter-module synchronization.

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The programmable current amplifier CA5351 is a gain-variable type current input - voltage output amplifier. It achieves an unparalleled combination of high gain and wide bandwidth, and it also supports fast response. Due to stable operation against input added capacitance, there is no overshoot or ringing in pulse response. In addition to high performance, usability has also been pursued, making it suitable for a variety of microcurrent measurements, from cutting-edge research to industrial applications, including synchrotron radiation facilities. 【Features】 ■ High gain: 10³ to 10¹⁰ V/A (8 ranges, 10 times step) ■ Wide bandwidth: DC to 500 kHz (10⁶ V/A), DC to 70 kHz (10⁹ V/A) ■ Fast response: 0.7 μs (10⁶ V/A) ■ Low noise ■ Current suppression: ±8 nA to ±8 mA (7 ranges) *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "WP Series" is a high-capacity auto-ranging DC power supply that can cover the output of multiple power sources with a single unit, featuring a current and voltage operating range that is three times larger. By simply connecting with cables, it is easy to build a high-capacity system. It can connect up to 50 units, allowing the 18kW model to support a maximum capacity of 900kW. We offer a lineup of multifunctional models that support battery simulation and ATE embedded models. Please choose according to your application and budget. 【Features】 ■ Auto-ranging output ■ High capacity and space-saving ■ Maximum output voltage: 80V to 1950V ■ Parallel connection: up to 50 units ■ Maximum output current: 23A to 540V *For more details, please refer to the PDF materials or feel free to contact us.

• DC Power Supply

The "VP Series" is a programmable DC power supply that allows for flexible construction of various power systems. Its slim design for 19-inch rack storage enables the construction of multi-channel systems in a space-saving manner. Please choose the appropriate power from a wide range of voltage and current combinations. 【Features】 ■ High-resolution output settings with 16-bit D/A ■ 16 settings storage memories ■ Starts with the settings from the last power-off ■ Series operation of 2 units and parallel operation of up to 5 units ■ Protection features: overvoltage, overcurrent, overheating *For more details, please refer to the PDF materials or feel free to contact us.

• DC Power Supply

This catalog features the "Impedance Meter" manufactured by Kwanmu Electronics, handled by NF Circuit Design Block. In addition to various analysis functions, it includes the impedance analyzer "6500B Series," which is capable of measuring large DC superimposed currents, as well as the high-accuracy, high-frequency LCR meter "6500P Series," among other products. Please make use of this when selecting products. 【Contents (excerpt)】 ■ Impedance Analyzers ■ LCR Meters ■ Inductance Analyzers ■ DC Bias Current Sources ■ Test Fixtures *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "CM Series" is a single-output DC power supply that adopts a switching method with a maximum output of 1080W. The maximum output voltages are 30V, 80V, 160V, 250V, and 800V, with a total lineup of 15 models. Equipped with various interfaces, it supports three rack sizes: 1/2, 1/3, and 1/6, making it suitable as a power supply for various test systems. Additionally, it can be used as a DC power supply with double the voltage when connected in series and three times the current when connected in parallel with the same model. 【Features】 ■ Output Voltage: 30V/80V/160V/250V/800V ■ Abundant Interfaces ■ Adjustable Output, Switching Method, CV/CC ■ High Efficiency and High Power Factor ■ Series and Parallel Connection *For more details, please refer to the PDF document or feel free to contact us.

• DC Power Supply

The "CL3000 Series" is a multifunctional DC electronic load that supports a wide range of tests for various power supplies. It can be programmed for various load simulations, from static loads to complex dynamic loads. When combined with our DC power supplies, the "VP Series" and "CM Series," it accommodates a wide range of applications, including load characteristic tests and aging tests for DC-DC converters, charge and discharge tests for batteries, and characteristic evaluations of various electronic components. 【Features】 ■ Up to 5 units can be operated in master-slave parallel operation ■ 7 load modes: CC, CR, CV, CP, CC+CV, CR+CV, CP+CV ■ 2 operating modes: Static mode, Dynamic mode ■ Supports automated testing with programming and sequencing functions ■ Equipped with a color LCD that excels in operability and visibility *For more details, please refer to the PDF document or feel free to contact us.

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The "HSA Series" is a high-speed bipolar power supply that can stably drive DUTs (Devices Under Test) that cannot be driven by other power supplies or amplifiers, starting with electronic components such as capacitors and coils, and is used in various device testing. It features stable output that does not depend on the load, covering a wide range of applications. It is widely used in advanced research fields such as medical and biotechnology. 【Features】 ■ Four-quadrant output ■ Stable output for capacitive and inductive loads ■ Fast response: DC to 1 MHz / DC to 500 kHz ■ Maximum output voltage: 150 Vp-p / 300 Vp-p ■ Low output impedance ■ Total of 5 models *For more details, please refer to the PDF document or feel free to contact us.

• DC Power Supply

Introducing the LCR meter series that achieves stable measurements with high speed and high precision. The ZM series LCR meters cover a wide frequency range from 1 mHz in the low-frequency region up to a maximum of 5.5 MHz. With fast and consistent measurements with minimal variation, they cater to a wide range of applications from material research to component production lines. We offer three models: "ZM2371," "ZM2372," and "ZM2376." 【Features (excerpt)】 ■ Wide measurement frequency range and high-resolution settings ■ Wide measurement levels and ALC function ■ High-speed measurement ■ High precision ■ DC bias voltage ■ DC resistance (DCR) measurement *For more details, please refer to the PDF document or feel free to contact us.

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The protection relay tester "RX4744" has achieved testing of voltage and current with four elements each, which previously required multiple models, all in a single unit. Its compact and lightweight design makes it suitable for maintenance and inspection of core systems, as well as for testing protective functions related to mega solar, wind power, and cogeneration. To improve the efficiency of work in electrical equipment maintenance and the manufacturing of protection relays, it is equipped with various operating modes for individual and comprehensive testing, enhancing operability. By combining peripheral devices and software, an automatic relay testing system can be constructed. 【Features】 ■Equipped with 80A and 40A current ranges ■ Equipped with microcurrent output in the 400mA/5mA range ■ High accuracy in amplitude, phase, and frequency output ■ Built-in counter (milliseconds) allows for measurement of operating time ■ Rich operating modes for individual and comprehensive testing ■ Output switching function combined with a three-phase simulated circuit breaker to support comprehensive testing ■ Supports automation and efficiency of testing with protection relay testing software ■ Two selectable models to match the exam: [Basic] RX4744A [Function Expansion] RX4744AS *For more details, please refer to the PDF document or feel free to contact us.

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Since the development of the first domestically produced function generator, we have continued to pursue what our customers truly seek and have evolved together with them. Here is an introduction to NF's function generator. It features high accuracy and stable output, a rich variety of output waveforms, diverse oscillation modes to accommodate various applications, and excellent operability. With the lineup of 'WAVE FACTORY' that allows you to freely create the required waveforms, we continue to propose function generators, believing that "this is the foundation of oscillators." 【Features】 ■ Low noise ■ Low distortion ■ 16-bit amplitude resolution ■ High amplitude setting accuracy ■ Floating ※WF1948 has been discontinued.

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The "WF1967/WF1968" is not just a high-performance, multifunctional function generator; it is a unique and original device. It comprehensively covers all the fundamentals of a function generator as we envision it, and it reliably meets the demands for high-quality signals. It also includes various features such as sequencing functions and dual-channel linking. 【Features】 ■ Up to 200MHz, high accuracy and high resolution ■ Amplitude resolution of 16 bits ■ Amplitude setting up to 20Vp-p/open ■ Abundant output waveforms ■ Diverse oscillation modes *For more details, please refer to the PDF document or feel free to contact us.

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The ZA57630 is an impedance analyzer that measures electronic components, semiconductor devices, materials, batteries, and more under actual conditions. With an easy-to-read display and touch panel, it offers a variety of functions that can be operated intuitively. Four measurement modes expand the range of measurement targets for both general electronic components and electronic materials such as insulating materials. 【Features】 ■ Accurate evaluation under actual operating conditions ■ Detailed settings are intuitive on a single screen ■ Corrections based on measurement error factors for accurate evaluation ■ Measurement speed as fast as 0.5 ms/point to reduce tact time ■ Enhanced component sorting functionality *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The FRA51615 is a frequency characteristic analyzer that incorporates the requests of our customers using FRA, pursuing ease of use in detail. It covers frequency characteristic measurements across a wide range of fields, from electronic circuits and electronic components/materials to mechatronics and electrochemistry. By equipping the necessary performance and functions for each field, it provides highly reproducible measurement data and promotes the efficiency of measurement work. 【Features】 ■ Design considering diverse measurement scenes ■ Reliable specifications and functions that achieve high-precision measurements ■ Packed with convenient features to enhance measurement work efficiency *For more details, please refer to the PDF materials or feel free to contact us.

• Other analytical equipment
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The "EC750SA/EC1000SA" is a compact and lightweight AC power supply with an easy-to-read display, making it convenient for use in both laboratories and production lines. In addition to providing stable AC and DC power, it is equipped with essential features for power testing, such as measurement functions, current limiters, and sequencing. Furthermore, it has comprehensive protection features and interfaces, allowing for safe use as a system-integrated power supply. 【Features】 ■ Maximum AC output voltage: 310V ■ Maximum peak current: 4 times the maximum output current (RMS) ■ Measurement functions, sequencing, current limiter, protection features ■ Control software included as standard *For more details, please refer to the PDF document or feel free to contact us.

• DC Power Supply
• Electrical Equipment Testing

The DM2571 is a high-precision, multifunction digital multimeter with a DC voltage accuracy of 35ppm (0.0035%) and a 6 1/2 digit display. It incorporates 12 types of measurement items including voltage, current, resistance, frequency, and temperature, as well as 9 types of calculation functions. Equipped with a versatile display and rich interfaces, it is also suitable for integration into measurement systems. 【Features】 ■ 6 1/2 digit display: 1,199,999 counts ■ DCV: Basic accuracy 0.0035% ■ DCI/ACI: 100μA to 10A, 100pA resolution ■ 4.3-inch color TFT ■ 12 types of measurement items and 9 types of calculation functions ■ High-speed sampling rate of up to 10k rdg/s ■ USB, LAN, RS-232C, digital I/O, GPIB (optional) *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The 『CA5350』 is a gain-variable type current input-voltage output amplifier. The gain can be set from 10^4 V/A to a maximum of 10^11 V/A. It is also equipped with a current suppression function that can cancel out the dark current, which is unavoidable in photoelectric conversion elements such as photodiodes. With its performance, functionality, and operability, it is a programmable current amplifier that responds to the current amplification of signals from various current output sensors. 【Features】 ■ High gain and wide bandwidth ■ Variable gain: 10^4 to 10^11 V/A ■ Fast response and stable operation ■ Compatible with system integration ■ Achieves ultra-low noise *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "BP Series" is a high-voltage, high-current, high-speed bipolar power supply with built-in sequencing functionality. In addition to bipolar output capable of sourcing (supplying) and sinking (absorbing) both positive and negative, it features a sequencing function that allows for flexible programming of output patterns. It can be used for various applications such as power supplies for automotive electrical components, motors, solenoids, and large-capacity capacitors, as well as electronic loads for power/battery testing. 【Features】 ■ Wide output range - 4-quadrant output for voltage and current ■ High voltage, high current, wide bandwidth, constant current operation ■ Sequencing function ■ Response calibration function ■ Output voltage limiter and output current limiter ■ User-friendly features *For more details, please refer to the PDF documentation or feel free to contact us.

• DC Power Supply
• Electrical Equipment Testing

The AE9922 is a discriminator that can distinguish detection signals of acoustic emissions (AE) and convert them into pulse signals necessary for analysis. Compared to conventional devices, it achieves a compact, lightweight, and low-cost design, while expanding the frequency range to a low band of 1 kHz to 2 MHz. It accommodates a wide range of applications, from those who are introducing AE for the first time to integration into equipment diagnostic systems. 【Features】 - Wide frequency range from 1 kHz to 2 MHz, enabling measurement of rocks and concrete. - Application to equipment diagnostics is possible through alarm circuits and external control functions. - Can directly connect preamplifiers or sensors. - Discrimination method using two levels, VH and VL, reduces the effects of reflections and noise. - Operates on DC 12V or AC 100V (AC adapter included). *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "LP Series" is a DC power supply equipped with excellent disturbance noise resistance and low noise measures. Utilizing unique circuit design technology, it suppresses output noise voltage to an extremely low level, and to prevent internal noise radiation and external noise intrusion, it employs a shielded structure, output shield connectors, and cables. It can be used as a power supply for various sensor preamplifiers and as a low-noise DC bias source, meeting stringent low noise requirements and applicable in a wide range of uses from research and development to shipping tests. 【Features】 ■ Output noise voltage: Below 10μVrms typ. (Bandwidth 10Hz to 20MHz) ■ Output voltage stability: ±10ppm/℃ typ. ■ Adoption of shielded structure, output shield connectors, and cables ■ Meets stringent low noise requirements in ultra-precision measurements *For more details, please refer to the PDF document or feel free to contact us.

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The "DP Series" is a programmable AC power supply that meets the diverse evaluation and testing needs. There is no need to switch response characteristics based on load conditions, and it can stably drive both capacitive and inductive loads. Additionally, it provides low distortion and stable output. We also offer a rich lineup that can be selected according to your application. From single-phase 1.5 kVA to a maximum of three-phase 144 kVA, we provide suitable power. 【Features】 ■ High robustness and low distortion ■ Low noise ■ Regenerative and reverse current compatible (DP Series Type R) ■ Outputs DC with the same capacity as AC ■ A comprehensive lineup that meets various needs *For more details, please refer to the PDF materials or feel free to contact us.

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