FOUR-QUADRANT HIGH SPEED BIPOLAR POWER SUPPLY
Four-quadrant bipolar power supplies which source and sink power
- Output Voltage:
±10 V to ±60 V - Max output power:
50 W, 60 W - Frequency bandwidth:
DC to 30 kHz - DC output meter
High Speed Bipolar Power Supply with Function Generator
The DJOPF series is a four-quadrant bipolar power supply capable of both sourcing and sinking current. Its unique design achieves a compact and lightweight form factor, measuring just 5.51 inches (140 mm) in width and weighing only 3 kg. This bipolar amplifier features a built-in function generator, offering high-speed response in a space-saving package. It supports both Constant Voltage (CV) and Constant Current (CC) modes. The unit delivers high-speed output proportional to input waveforms or internally generated signals, including sine, triangle, sawtooth, and square waves. The DJOPF series is ideal for evaluating solar panels, battery-powered devices, and battery management ICs.
FEATURES AND BENEFITS
- Response speed
- Newly developed DJOPF series is the most appropriate for transient response tests with such high power and broad bandwidth.
- Four models
- Select a model fitting for your applications from various output voltages and currents.
- Built-in function generator
- In addition to waveform generation, the DJOPF includes a sequence function.
- DC or AC output meter
- A 3-digit digital meter displays the DC or AC value of the output voltage and current.
- Compact & Light weight
- For maximum compactness and lightweight, the DJOPF series has been improved for a small footprint and easy carry.
- Constant voltage (CV)/Constant current (CC)
- A single switch selects between CV and CC modes.
- Four-quadrant operation
- The DJOPF series can be used both as a high-speed response DC power supply and as an electronic load.
- Complete protective function
- Overvoltage protection, Overcurrent protection, and Output short-circuit protection are all provided.
APPLICATIONS
- Suitable for testing battery-driven equipment by simulating battery operation
- Inductive loads such as coil and transformer
- Capacitive load like a capacitor
- Various motor tests
- Tests for in-vehicle electrical component
- Evaluation test for solar panel-related devices
- For surface treatment
Note: We do not design this bipolar power supply for charging and discharging batteries.
For battery charge and discharge application, please refer to the Battery Cycle Tester product page.
Models
| Model | Maximum output | Frequency bandwidth (-3 dB) | ||
|---|---|---|---|---|
| Voltage | Current | Power | ||
| DJOPF10-5 | ±10 V | ±5 A | 50 W | DC to 30 kHz |
| DJOPF20-3 | ±20 V | ±3 A | 60 W | DC to 30 kHz |
| DJOPF30-2 | ±30 V | ±2 A | 60 W | DC to 30 kHz |
| DJOPF60-1 | ±60 V | ±1 A | 60 W | DC to 30 kHz |
- Even more high power model, DOP series, faster model, DOS series, are available. Contact the local sales office for details.
- Please contact us for specifications other than those listed below.
Functions
Protections
Voltage limit protection (V limit)
The DJOPF is equipped with voltage limit protection, which safeguards the load by limiting the output to a user-defined value, even under abnormal conditions.
Current limit protection (I limit)
The DJOPF is equipped with current limit protection, which protects load and power supply by limiting output to the value that was set optionally, even in the event of overload.
Overvoltage Protection (OVP)
The DJOPF is equipped with overvoltage protection, which protects the load by limiting voltage up to approx. 120% of the rated output voltage even at abnormal conditions.
Overcurrent Protection (OCP)
The DJOPF is also equipped with overcurrent protection, which protects power supplies and load by limiting current up to approx. 120% of the rated output current.
High speed overcurrent protection
DJOPF is provided with 2 types of overcurrent protections, high speed overcurrent protection to limit the pulse current, and standard overcurrent protection to limit the static current. The standard overcurrent protection limits the static current, responding at around 1ms. An additional fast response type limited current circuit can limit the pulse current of square waveforms or from capacitors to approximately 2 times the rating.
Operation diagram
TThe DJOPF series operates as a four-quadrant power supply, meaning it can both source and sink current across its voltage range. As shown in the diagram, it can supply power to a load (source) and absorb power from a load (sink). This capability makes it suitable for driving inductive and capacitive loads, as well as for battery charge/discharge simulation.
Fundamental Waveform Generated Function
The DJOPF series is a bipolar power supply that can perform four-quadrant operation. It can supply (source) and absorb (sink) current in the field of the drawing on the right.
Applications
Inrush current source for inrush current measurement, waveform fluctuation testing, etc.
Measurement Functions
DJOPF is equipped with measurement functions that measure DC value, AC value, maximum value, and minimum value thus Wide frequency ranges, DC to 30 kHz, can be measured automatically, and it is easy to change the setting depending on the application.
Sequence Functions
DJOPF is equipped with a sequence function that can program step length, step amplitude, ramp, CV/CC mode, sequence-ending setting, AC superposition, step jump, number of jumps, etc. This capability allows for the generation of custom waveforms, making it valuable for a wide range of experiments, evaluations, and validation applications.
- Step time: 10 ms to 1999 s 999 ms (minimum step time: 1 ms)
- Up to 16 steps per program and settings for three programs can be saved.
- Can be set CV/CC mode per program
- Repetition: Infinite, 1 to 999
- DC voltage/current ramp operation, AC voltage/current sweep operation, and AC frequency sweep operation are available.
Complicated waveforms such as below can be easily generated using the sequence function.
Applications
Inrush current source for inrush current measurement, waveform fluctuation testing, etc.
Memory Function
DJOPF is equipped with both preset and setup memory. During fundamental wave operation, output voltage (at CV mode), Output current (at CC mode), CV/CC setting, and waveform setting can be saved to 10 setup memories. Also, sequence programs can be saved in up to 3 programs. Data changes can be saved, and data called out very easily.
DJOPF is equipped with
[Protection function],[Key-lock function], and [CV/CC crossover], as standard functions.
Specifications
- Input voltage
- 85 to 264 Vac, 50/60 Hz, Single-phase
- Output control
-
[Local] Front panel controls
[External control signal] Vcon-in, Input voltage -10 to +10 V
[Digital remote] Command (Option)
Options
- -LEt *
-
LAN interface port
Enable digital control via LAN.
Output ON/OFF, Voltage/Current setting (AC and DC), Switch of constant voltage/constant current, Frequency setting, Waveform setting (sine wave, square wave, and triangle wave), Phase setting (sine wave), Duty setting (square wave and triangle wave)
- -LGob *
-
Optical Interface port
With optical communication, isolation control is performed. As complete isolation is performed by means of optical fiber, this enables advanced prevention of erroneous operations involved with transient phenomena caused by surges, inductive lightning, external noise, etc.- -LGob: Optical interface port + optical cable 2 meters
- -LGob(Fc5): Optical interface port + optical cable 5 meters
- -LGob(Fc10): Optical interface port + optical cable 10 meters
- -LGob(Fc20): Optical interface port + optical cable 20 meters
- -LGob(Fc40): Optical interface port + optical cable 40 meters
The optional optical interface port (-LGob) is recommended when using this bipolar power supply under the following conditions:
- Noisy environment including factories (Example: Motors or coils are used near power supplies and loads).
- Operating the unit with high-voltage floating (greater than 250 V).
- Installation distance of 2 meters or more between this AC Power Source and a controller such as a computer, laptop, or Programmable Logic Controller (PLC).
- -LNh
-
No handle
The handle for carrying will not be equipped.
- -LS
-
External Output ON/OFF
This option cannot be combined with -LGob, -LUs1, or -LEt (Digital interface ports).
- -LUs1 *
-
USB interface port
Enable digital control via USB.
Output ON/OFF, Voltage/Current setting (AC and DC), Switch of constant voltage/constant current, Frequency setting, Waveform setting (sine wave, square wave, and triangle wave), Phase setting (sine wave), Duty setting (square wave and triangle wave)
* These options cannot be selected together. Only one of each can be selected.
How to Order
When ordering, add Option No. in the following order by alphabet to Model No.
<Example> DJOPF60-1-LNhS, DJOPF10-5-LGob(Fc5)Nh
Accessories
- AC INPUT CABLE
-
Standard CABLE TYPE1 
125 V/10 A 2.5 meters
Fixed length
Sold separately CABLE TYPE3 
250 V/10 A 2.5 meters
Fixed length
Sold separately CABLE TYPE4 
250 V/10 A 2.5 meters
Fixed length
- Interface adapters
-
To use the optical interface, you need to prepare an optical interface adapter separately. The following interface adapters are available according to your controller port.
For details, refer to CO/USB series.- CO-E32: LAN to optical interface adapter
- USB-OPT: USB to optical interface adapter
- CO-OPT2-9: RS-232C (9 pin) to optical interface adapter
- CO-OPT2-25: RS-232C (25 pin) to optical interface adapter
- CO-OPT4-25: RS-485 (25 pin) to optical interface adapter
- CO-G32: GPIB to optical interface adapter (Scheduled for discontinuation in December 2028)
Example of communication with optical fiber 
- Application software
-
PSS2en series: Remote control, Test workflow design, and Data logging
Click here for the PSS2en seriesPSS2en is the dedicated software that can actuate various power supplies, electronic loads, and digital controllers for power supplies manufactured by Matsusada Precision Inc. with a simple setup.
It is perfect for the aging test, the burn-in test, and the withstand voltage test for electronic parts, as well as for the endurance test, intermittent/continuous operation test, or various simulation tests for automobile electric components.
Dimensions
Tech Notes
Capacitive Load
Output resonance may occur if the capacitive load exceeds 100 pF (including stray capacitance of the output wire). In such cases, insert a high-voltage resistor (100 Ω to 1 kΩ) in series with the output. Note that the frequency bandwidth is limited when driving capacitive loads. Additionally, in applications such as corona discharge, current spikes exceeding the rating may occur, which can damage the amplifier. Always use a series output resistor to limit the current in these scenarios.
Note: Avoid continuous input of high-frequency signals that exceed the amplifier's power handling capabilities, as the increased internal loss may result in damage to the unit.
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-
DJOPF series Datasheet
Date: 2025-09-12 rev 16
PDF (2,618 KB)
-
Bipolar Power Supplies with Function Generator
Date: 2025-01-20 rev.06
PDF (4,904 KB)
-
Bipolar Power Supplies/Amplifiers Selection Guide
Date: 2023-10-17 rev.03
PDF (6,310 KB)
-
DJOPF series Instruction Manual
PDF(730KB)
-
DJOPF series Basic Instruction Manual
Date: 2020-11-02 rev0.0
PDF (1,006 KB)
-
USB driver (-LUs1 Option) for Windows 10, 11
Date: 2025-12-19 rev 2.12.36.20
ZIP(1,629KB)
-
USB driver (-LUs1 Option) for Windows XP, 7, 8, 8.1
Date: 2025-01-22 rev 1.7.6
ZIP (6,504 KB)
-
DJOPF series Outline Drawing (DXF, PDF)
Date: 2024-07-29
ZIP (400 KB)
Login Required
-
DJOPF series Datasheet
Date: 2025-09-12 rev 16
PDF (2,618 KB)
-
Bipolar Power Supplies with Function Generator
Date: 2025-01-20 rev.06
PDF (4,904 KB)
-
Bipolar Power Supplies/Amplifiers Selection Guide
Date: 2023-10-17 rev.03
PDF (6,310 KB)
-
DJOPF series Instruction Manual
PDF(730KB)
-
DJOPF series Basic Instruction Manual
Date: 2020-11-02 rev0.0
PDF (1,006 KB)
-
USB driver (-LUs1 Option) for Windows 10, 11
Date: 2025-12-19 rev 2.12.36.20
ZIP(1,629KB)
-
USB driver (-LUs1 Option) for Windows XP, 7, 8, 8.1
Date: 2025-01-22 rev 1.7.6
ZIP (6,504 KB)
-
DJOPF series Outline Drawing (DXF, PDF)
Date: 2024-07-29
ZIP (400 KB)
On this website, we provide only the latest versions of information and instruction manuals for our products. Therefore, the newest versions of manuals on the website may differ from those that came with products you purchased in the past.
