NF corporation extends the HSA series of bipolar amplifiers with the new model HSA42052.

The HSA series already consisted of three accurate amplifiers for reproducing the most complex waveforms. With an external signal generator, waveforms can be amplified up to 150Vp-p with fixed values of 1x, 10x, 20x and 50x. Variable amplification is also possible between 1 to 3x the input voltage. These amplifiers feature a bandwidth of DC to 1MHz, making them unique in the high-frequency market with these high voltages and currents. They have a rise time 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.

The extension With the HSA42052 provides a voltage range of up to 300Vp-p. However, the frequency range of this unit is limited to 500kHz and the maximum current is 5.66Ap-p. Need a higher voltage or power? With all HSA models, we can double the voltage and power using a second unit and an inverse input.


The gain of the HSA can be infinitely and precisely adjusted using a precision potentiometer. If higher voltages are required, 2 amplifiers can be coupled by means of a balanced arrangement. With the DC bias output, an offset can easily be given 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.


Due to the bipolar design of the HSA series, the amplifier is operational in all 4 quadrants. This allows it to supply and absorb current at both positive and negative voltages. This makes the HSA ideally suited to drive inductive and capacitive loads.

This also makes the unit suitable for applications such as impedance measurements on capacitances, coils, transformers and batteries. The demand for new developments in multilayer ceramic capacitors for automotive applications is rising rapidly. The target capacitance is increasing with the smallest possible housing. Combined with a frequency analyser, the HSA amplifier lends itself extremely well to developing, testing and characterising these capacitors.

Also for measuring resonance characteristics of piezo electric elements or evaluating the hysteresis curve in magnetic materials, this amplifier can serve perfectly.

In summary, NF Corporation’s HSA is a very complete amplifier that can be used under the most demanding conditions.

For more information, please refer to the datasheet.


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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