NF corporation sets a new standard for accurately reproducing the most complex waveforms with its HSA series of bipolar amplifiers. With an external signal generator, the waveforms can be amplified up to 150Vp-p with fixed values of 1x, 10x, 20x and 50x. Variable amplification between one and three times the input is also possible. The amplifiers have a bandwidth of DC to 1Mhz. They also have a high switching speed of 475V per microsecond and a very low output impedance that is adjustable. There are three models in this series with up to 3Ap-p, 6Ap-p and 12Ap-p.

Due to the bipolar design of the HSA series, the amplifier is operational in all 4 quadrants. This makes it possible to supply and absorb current at both positive and negative voltages. This makes the HSA extremely suitable for driving inductive and capacitive loads.

FUNCTIONALITY HSA Bipolar Amplifiers

The amplification factor of the HSA can be infinitely and precisely adjusted by means of a precision potentiometer. If higher voltages are required, two amplifiers can be coupled in a balanced arrangement. With the DC bias output, an offset can easily be added to the amplified waveform. To ensure safe operation and prevent damage to the amplifier, the NF HSA series is equipped with overvoltage and overload protection.


The NF corporation HSA series is widely used for driving the most challenging applications. The four quadrant capability makes the unit suitable for applications such as impedance measurements on capacitors, coils, transformers and batteries.

The demand for new developments in the field of multilayer ceramic capacitors for applications in the automotive industry is increasing rapidly. The intended capacitance becomes larger with the smallest possible housing. In combination with a frequency analyzer, the HSA amplifier lends itself extremely well to the development, testing and characterisation of these capacitors.

The amplifier can also be used to measure the resonance characteristics of piezoelectric elements or to evaluate the hysteresis curve of magnetic materials.

In short, the HSA of NF Corporation is a very complete amplifier that can be used under the most demanding circumstances.

For detailed specifications, please refer to the datasheet of the NF corporation HSA series.


Arnold Memelink

Arnold Memelink


"The ABB Power Grids Jumet organisation is an innovative development and production facility of ABB that manufactures active filters and battery energy storage systems to support a stable grid. To test these systems we have acquired two Cinergia GE/EL +120kVA eplus units capable of doing grid emulation (AC + DC), operating as an electronic load (AC +DC) and being a battery emulator. We have experienced very good support from TTMS in obtaining these two Cinergia units. This included organising an on-site demonstration and supplying loan systems prior to the delivery of our final systems. This way we could start testing as early as possible. TTMS also organised training for the operators from the original manufacturer. This support allowed us to introduce the first battery energy storage systems even prior to the full delivery of the Cinergia systems."

University of Luxembourg

Sasan Rafii-Tabrizi

University of Luxembourg

“At the Energy and Environment department of the Faculty of Science, Technology and Medicine (FSTM) of the University of Luxembourg we do have different research projects related to green energy contributing to the development of eco-cities. As a long-standing partner of our research unit, TT&MS has proven that they are able to answer even the most complex questions in a professional manner. They have shown that they are always up to date with the latest technology and do not spare any effort to look at the application and even the situation on site. The exchange of ideas was always very pleasant and took place quickly. We look forward to further years of fruitful cooperation.”


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