AMPS Series

Ultra high speed high voltage amplifier

Bipolar power supplies / High Voltage Amplifier AMPS Series

Maximum slew rate 1200V/μs ! High speed high voltage/high current amplifier

AMPS series is an ultra-high speed high voltage amplifier. It realized high voltage output of ±20kHz and very high slew rate 1200V/μs. The high current type of peak current 4 A is also selectable.

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AMPS datasheet

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Ultra high slew rate 1200V/μs

±10kV output model and ±20kV output model achieved the conventional double high-speed response of slew rate 1200V/μs. Laser modulation and beam deflection at unprecedented high speed are possible.

High-speed response of frequency bandwidth 100kHz

Frequency bandwidth with actual load is as high as 100kHz, and solve the problem of “When actual operation with load, the response become slow.” Ideal for higher speed printer or material evaluation testing.

Amplifier AMPS Series Voltage rise waveform

For measuring voltage and/or current

When the voltage at load is lower than the rated maximum output of AMPS series, constant voltage and high speed operation is possible by sinking the output current with current sink feature. As example of the development of ceramic and electrophotography process, by current sink, it is possible to absorb the voltage of a capacitive load quickly or to perform diselectrification smoothly. And, because of double peak current of rated current in DC output, particularly, rise characteristics for the capacitive load can be improved.

Amplifier AMPS Series Output range


Output Model
Voltage [kV] Current [mA] Rated output
power [kW]
Slew Rate [V/μs]
±400V ±2000 0.8 100 AMPS-0.4B2000
±600V ±2000 1.2 100 AMPS-0.6B2000
±2kV ±200 0.4 80 AMPS-2B200
±5kV ±80 50 AMPS-5B80
±10kV ±40 20 AMPS-10B40
±20kV ±20 10 AMPS-20B20


INPUT/Output cable

Input cable
[400 W models]
[800 W, 1200 W models]
CABLE TYPE5, Standard

The length is 2.5 m for both. Please see CABLE series catalog for details.

Output cable
This image is CN-40-AHVP and CN-40-AHVP (5).
This image is CN-40-AHVP and  CN-40-AHVP (5). This image is  CN-40-AHVP TU and CN-40-AHVP TU (5).

Please refer to CN series.


Amplifier AMPS Series Option

Characteristic of amplifier

Frequency Response

Response of Matsusada amplifiers are described as "Frequency bandwidth". When swing the output with sinusoidal waveform with rated resistive load, output swing (amplitude)is reduced as input frequency become faster. Frequency response in the specification is frequency fc is where output swing is 90% approx. (-1dB). (fig.1)
In case clear output waveform is required, please select a HV amplifier which has high enough frequency bandwidth against required frequency. In general 3 to 5 times more frequency bandwidth for sinusoidal waveform, about 10 times more for rectangular waveform, is required. In case of insufficient frequency bandwidth the output swing shall be reduced, and also the phase difference be large, so some solutions, such as monitoring output waveform, shall be required.

Amplifier AMPS Series Frequency response

Rise Time (step response)

Step response can be indicated with rise time. (fig.2) Usually the rise time of amplifier of response (=bandwidth) fc (Hz) is givin by a formula below.
tr ≒ 0.35/fc
The fall time tf is equals to tr.

Amplifier AMPS Series Rise time

Slew Rate

The responsiveness of our high speed amplifier is determined with slew rate (SR). The step responsibility of our amplifier is as shown in fig.3.
SR = 1200V/μs In case of output amplitude is smaller the response time become shorter.

Amplifier AMPS Series Slew rate

Amplifier AMPS Series Capacitive load 2

Capacitive Load

When a capacitive load is more than 100pF (including a stray capacitance of output wire), the resonance in the output may occur.
In that case, install 100-ohm (@0.1μF) to 1000-ohm (@1000pF) of high voltage resistance in the output in series. Please note that the frequency band will be limited as the formula written in the right figure when an amplifier is used with a capacitive load. In addition, when an amplifier is used for the use such as a corona discharge, the current which is higher than rating will flow and it will affect the amplifier badly. In this case, as well as the time to use an amplifier with a capacitive load, please install the output resistance and limit the current.
*Please avoid continuous inputting of high frequency which reduces output frequency of an amplifier.
An amplifier will be broken because of increase of internal loss.
Technical Knowledge
Irems=6.28FCVrms Irms=2.2FCVp-p

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