Selection chart of Bipolar power supplies/High Voltage Amplifiers
Fast Frequency response, compact bipolar power supplies and high voltage amplifier are available.

INDEX
Bipolar power supplies, Low Voltage Amplifiers
Four-quadrant bipolar power supply which source and sink electric power. Most appropriate for evaluation test such as solar panels devices, equipments driven by battery.
Less than 1 kW
Series |
DJOP![]() |
DJOPF![]() |
DOC![]() |
DHOP![]() |
DOA![]() |
DOKF![]() |
|
---|---|---|---|---|---|---|---|
Output Power | 50 to 60 W | 50, 60 W | 50, 100 W | 225 to 240 W | 75 to 300 W | 400 W | |
Frequency bandwidth (-3 dB) * It differs from the model conditions. |
DC to 30 kHz | DC to 30 kHz | DC to 10 kHz | DC to 100 kHz | DC to 1 MHz | DC to 120 kHz | |
Output Voltage | 10 V | ±10 V | ±10 V | ||||
20 V | ±20 V | ±20 V | ±20 V | ±20 V | |||
30 V | ±30 V | ±30 V | |||||
40 V | ±40 V | ||||||
45 V | ±45 V | ||||||
60 V | ±60 V | ±60 V | ±60 V | ||||
75 V | ±75 V | ||||||
80 V | ±80 V | ||||||
150 V | ±150 V | ||||||
500 V | ±500 V | ||||||
1000 V | ±1000 V | ||||||
Features | Digital Functions |
|
|
||||
Four-quadrant action | Four-quadrant action | Four-quadrant action | Four-quadrant output (Source and Sink are available) | Four-quadrant action | Four-quadrant action to source and sink current | Four-quadrant action to source and sink current | |
DC bias function | DC bias function | DC bias function | DC bias function | ||||
DC or AC meter | DC output meter | DC or AC output meter | DC output meter | ||||
Constant voltage and constant current |
Constant voltage and constant current | Constant voltage and constant current | Constant voltage and constant current | Constant voltage and constant current | Constant voltage and constant current | ||
Complete protective function | Complete protective function | Complete protective function | Complete protective function | ||||
Ripple | [CV mode] Less than 0.02% rms [CC mode] Less than 0.2% rms |
[CV mode] Less than 0.02% rms [CC mode] Less than 0.2% rms |
[CV mode] 0.02% rms [CC mode] 0.2% rms |
[CV mode] Less than 0.1% rms [CC mode] Less than 0.4% rms |
Less than or equal to 0.02% rms | [CV mode] DOKF20-20: 2 mV Except DOKF20-20: 4 mV (typ.) [CC mode] 3 mA, Typical |
|
Applications | Motor | Various motor tests | Various motor tests | Various motor tests | Evaluation tests of various motors | Various motor tests | |
Coil and transformer | Inductive load such as coil and transformer | Inductive load such as coil and transformer | Inductive load such as coil and transformer | Evaluation tests of inductive load such as coil and transformer | To drive inducible load such as coil and transformer | ||
Capacitor | Capacitive load like capacitor | Capacitive load like capacitor | Capacitive load like capacitor | Evaluation tests of capacitive loads such as capacitors or display panels | Drive capacitive load such as capacitor | ||
In-vehicle electrical component | Voltage regulation tests of in-vehicle electrical component | Tests of in-vehicle electrical component | Voltage regulation tests of in-vehicle electrical component | Voltage fluctuation tests of electric elements of cars | |||
Solar panel and batteries | Evaluation test of devices related to solar panel devices | Evaluation test of devices related to solar panel devices | Evaluation test of devices related to solar panel devices | Evaluation tests of devices relative equipment to solar cells/panels | Evaluation of solar cell/panel related equipments such as solar inverters (PV inverters) | ||
Surface treatment | For surface treatment | For surface treatment | For surface treatment | ||||
Evaluation tests | Simulated battery for evaluation tests of equipments driven by battery. | Simulated battery for evaluation tests of equipments driven by battery. | Simulated battery for evaluation tests of equipments driven by battery. | ||||
Series |
DJOP![]() |
DJOPF![]() |
DOC![]() |
DHOP![]() |
DOA![]() |
DOKF![]() |
1 kW or more
Series |
DOSF![]() |
DOEF![]() |
DOP![]() |
DOPF![]() |
DOS![]() |
|
---|---|---|---|---|---|---|
Output Power | 0 to 2 kW | 0.4 to 1.2 kW | 0.15 to 2 kW | 0.15 to 2 kW | 0.15 to 2 kW | |
Frequency Bandwidth (-3 dB) * It differs from the model conditions. |
DC to 200 kHz | DC to 200 kHz | DC to 30 kHz | DC to 30 kHz | DC to 200 kHz | |
Output Voltage | 5 V | ±5 V | ±5 V | |||
6 V | ±6 V | ±6 V | ||||
10 V | ±10 V | ±10 V | ||||
20 V | ±20 V | ±20 V | ±20 V | ±20 V | ±20 V | |
25 V | ±25 V | ±25 V | ±25 V | ±25 V | ||
30 V | ±30 V | ±30 V | ||||
40 V | ±40 V | |||||
45 V | ±45 V | ±45 V | ±45 V | ±45 V | ||
60 V | ±60 V | ±60 V | ±60 V | ±60 V | ±60 V | |
70 V | ±70 V | ±70 V | ||||
80 V | ±80 V | ±80 V | ||||
120 V | ±120 V | ±120 V | ||||
150 V | ±150 V | ±150 V | ||||
200 V | ±200 V | ±200 V | ||||
300 V | ±300 V | ±300 V | ||||
Features | Digital Functions |
|
|
|
||
DC bias function | DC bias function | DC bias function | ||||
Four-quadrant action | Four-quadrant action to source and sink current | Four-quadrant action | Four-quadrant action | Four-quadrant action | ||
DC or AC meter | DC output meter | DC output meter | ||||
Constant voltage and constant current |
Constant voltage and constant current | Constant voltage and constant current | Constant voltage and constant current | Constant voltage and constant current | ||
Master/Slave | Master/Slave | Master/Slave | ||||
Complete protective function | Complete protective function | |||||
Ripple | 0.02% rms | 0.02% rms | Less than 0.02% rms | 0.02 s% rms | Less than 0.02% rms | |
Applications | Motor | Various motor tests | Tests of various DC motors | Various motor tests | Motor testing | Various motor tests |
Coil and transformer | Biasing inductive loads (coil, transformer, etc.) | To drive inducible load such as coil and transformer | Inductive load such as coil and transformer | Biasing inductive loads (coil, transformer, etc.) | Inductive load such as coil and transformer | |
Capacitor | Driving capacitive load (capacitors and so on) | Capacitive load such as electric double-layer capacitor | Driving capacitive load (capacitors) | Ripple test of capacitors | ||
In-vehicle electrical component | Voltage fluctuation tests of automotive electrical components | Voltage regulation tests of in-vehicle electrical component | Voltage regulation tests of in-vehicle electrical component | |||
Solar panel and batteries |
Solar inverters (PV inverters), solar panels | Evaluation of solar cell/panel related equipments such as solar inverters (PV inverters) | Evaluation test of solar panel related devices | Solar panels | Evaluation test of solar panel related devices | |
Surface treatment | For surface treatment | For surface treatment | For surface treatment | |||
Series |
DOSF![]() |
DOEF![]() |
DOP![]() |
DOPF![]() |
DOS![]() |
High Voltage Amplifiers
Models with the fastest slew rate of 1,200 V/µs or compact modules for built-in use are available. Those series produce high voltage output in sine waves, triangle waves, saw tooth waves, and more.
Series |
AP![]() |
AS![]() |
COR![]() |
AMS![]() |
AMJ![]() |
AMT![]() |
AMP![]() |
AMPS![]() |
|
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Output Power | 3 to 10 W | 3 to 10 W | 20 W | ±20 to ±200 W | 20 to 40 W | ±20 to ±200 W | 0.1 to 1.2 kW | 0.4 to 1.2 kW | |
Frequency bandwidth (-3 dB) * It differs from the model conditions. |
DC to 2 kHz | DC to 24 kHz | DC to 1 kHz | DC to 30 kHz | DC to 75 kHz | DC to 100 kHz | DC to 60 kHz | DC to 200 kHz | |
Output Voltage | 0.3 kV | ±0.3 kV | ±0.3 kV | ||||||
0.5 kV | ±0.5 kV | ||||||||
0.6 kV | ±0.6 kV | ±0.6 kV | ±0.6 kV | ±0.6 kV | ±0.6 kV | ||||
1 kV | ±1 kV | ±1 kV | ±1 kV | ±1 kV | ±1 kV | ||||
1.5 kV | ±1.5 kV | ±1.5 kV | ±1.5 kV | ||||||
2 kV | ±2 kV | ±2 kV | ±2 kV | ||||||
3 kV | ±3 kV | ±3 kV | ±3 kV | ||||||
4 kV | ±4 kV | ||||||||
5 kV | ±5 kV | ±5 kV | ±5 kV | ±5 kV | |||||
10 kV | ±10 kV | ±10 kV | ±10 kV | ±10 kV | ±10 kV | ||||
20 kV | ±20 kV | ±20 kV | |||||||
30 kV | ±30 kV | ±30 kV | |||||||
40 kV | ±40 kV | ||||||||
Features | Slew rate | Fast responsivity up to 24 kHz | Fast response of slew rate up to 30 V/µs | Ultra high slew rate up to 1200 V/µs, only ±10 kV output model and ±20 kV output model | |||||
High speed response | High speed response up to 75 kHz | High speed response 360V/µ sec | High speed response of slew rate up to 700 V/µs | High-speed response of frequency bandwidth up to 100 kHz | |||||
Wave form | Desired output waveform reference to input waveform. | Desired output waveform reference to input waveform. | Various types of output wave forms according to the input wave | Various types of output wave forms | Various types of output wave forms according to the input wave | ||||
DC bias function | DC bias function | DC bias function | DC bias function | ||||||
DC output voltage monitor | DC output voltage monitor, 3.5-digit digital meter | DC output voltage monitor, 3.5-digit digital meter | DC output voltage monitor, 3.5-digit digital meter | ||||||
Other | All-Solid-State | All-Solid-State | Three functions of CC, CV and HV amplifier in one unit | The demand for evaluation of higher voltage solar panel | |||||
Return current terminal is standard and best for corona current control | |||||||||
Ripple | 0.025% rms or less | 0.025% rms or less | 0.1% p-p or less | 0.1% p-p or less | Less than 0.1% | 0.02% + 1 Vp-p or less | Less than 0.02% + 1 Vp-p | Less than 0.02% + 0.5 Vp-p | |
Applications | Electro photography process | Electro photography process | Electro photography process | Research and Development of electro photographic process | Electro photography process | Electro photography process | Electro photography process | Electro photography process | Electro photography process |
Corona discharge | Corona discharge | Corona discharge | Experiment of corona discharge | Corona discharge | Corona discharge | Corona discharge | Corona discharge | ||
Beam deflection | Beam deflection | Beam deflection | Beam deflection | Beam deflection | Beam deflection | Beam deflection | Beam deflection | ||
Electrorheological fluid | Electrorheological fluid | Electrorheological fluid | Electrorheological fluid | Electrorheological fluid | Electrorheological fluid | Electrorheological fluid | |||
Electrostatic chuck | Electrostatic chuck | Electrostatic chuck | Electrostatic chuck | Electrostatic chuck | Electrostatic chuck | Electrostatic chuck | |||
Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | Various Electrostatic tests | ||
Other test | Insulation and breakdown voltage testing | Insulation and breakdown voltage testing | Photosensitive drum testing | Breakdown voltage testing | Breakdown voltage testing | Breakdown voltage testing | Breakdown voltage testing | ||
Series |
AP![]() |
AS![]() |
COR![]() |
AMS![]() |
AMJ![]() |
AMT![]() |
AMP![]() |
AMPS![]() |
High Voltage Pulse Power Supplies
The below pulse power supplies are ideal for ion beam deflection, synchrotron radiation measurement, PMT and MCP.
Function Generator
What is a Bipolar Power Supply? (Basic Knowledge)
High Voltage Amplifier
High voltage amplifier converts the input voltage to high voltage waveform as it is as shown in fig. 1. These days the demand of HV amplifier is growing more and more, and now becoming an indispensable tool for research and development, experiments and integrating to a system for such fields as electronics, physics, biochemical and medical industries. With high voltage technologies Matsusada Precision Inc. manufactures various High Voltage amplifiers to meet all requirements from customers.
* We have amplifiers developed specially for electrostatic chuck or PZT. Please ask for details to our sales staff.

Four-quadrant Output Range
High Voltage amplifier is generally equipped with the "sink" function for output currents that provides constant voltage operation without regard to the type of load whether it is capacitive or conductive. (Fig.2) As it gives fast response, it is an ideal power supply for applications which require AC output.
Matsusada High Voltage amplifiers are all bipolar type and can be operated in a full four-quadrant area. (I, II, III, IV area)
- Vomax: Rated output voltage
- Iomax: Rated output current


Slew Rate
The responsivity of our high-speed amplifier is determined with slew rate (SR). The step responsivity of our amplifier is as shown in fig. 3.
SR = ΔV/μS
In case of output amplitude is smaller the response time becomes shorter. AMP series reach to greater than SR =700 V/µS at maximum.

Rise Time (step response)
Step response can be indicated with rise time. (fig.4) Usually the rise time of the amplifier of response (= bandwidth) fc (Hz) is given by a formula below.
tr ≒ 0.35/fc.
The fall time tf is equals to tr.

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 the frequency fc is where output swing is 70% (-3 dB). (fig. 5)
In case clear output waveform is required, please select a High Voltage amplifier which has high enough frequency bandwidth against required frequency. In general three to five times more frequency bandwidth for sinusoidal waveform, and 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.
* Please avoid continuous inputting of a high-frequency signal which reduces the output frequency of an amplifier. An amplifier will be broken because of increase of internal loss.

Capacitive Load
When a capacitive load is more than 100 pF (including a stray capacitance of output wire), the resonance in the output may occur. In that case, install 100-ohm (@0.1 μF) to 1000-ohm (@1000 pF) 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 signal which reduces output frequency of an amplifier. An amplifier will be broken because of increase of internal loss.

Important note to utilize the full performance of high-speed High Voltage amplifier
Output cable of High Voltage amplifiers is not shielded. If the output cable has some stray capacity against ground (earth ground or metal objects), output voltage will be sinusoidal or stop waveform and extra current will be drawn. As this current draw parallel to load, the following appearance might be happened.
- Slew rate or response frequency drop
- The waveform is distorted or changed

When there is output stray capacitance C the leak current by C will be as below.

Solution
Make sure to have proper connection to make stray capacitance of High Voltage cable as low as possible.
- Keep the length of output cable as short as possible.
- Keep the output cable away from floor, desks, or metal objects.
- Have no shielding on the output cable.