FOUR-QUADRANT FAST RESPONSE BIPOLAR AMPLIFIER
High speed bipolar amplifier
- Voltage range: ±5 to ±300V
- Current: ±1 to ±120A
- Power: 150 to 2000W
- Broad bandwidth:
DC to 30 kHz
Available for expanding to 6 kW with master/slave connection
DOP series is a four-quadrant bipolar amplifier which sources and sinks electric power. They can be used in 2 modes of a Constant Voltage (CV) or a Constant Current (CC). The weight is half of the conventional units by adopting the aluminum frame.
They are compact and high-speed, driving output proportional to the input waveform such as a sine wave, triangle wave, sawtooth wave, and square wave.
DOP series is most appropriate for inductive load including coil and transformer, capacitive load like capacitor, test of DC servo motor or automobile electric appliances, and surface treatment.
All the models are completely solid-state with output voltage between ±5 V and ±300 V.
Note: This product is not designed for charge and discharge of battery.
For battery charging and discharging applications, please refer to the Battery Cycle Tester product page.
FEATURES AND BENEFITS
- Response speed
- Newly developed DOP series is the most appropriate for transient response tests with such high power and broad bandwidth.
- Wide range of products
- Select a model fitting for your applications from our wide range of output voltage and current.
- DC bias
- 10-turn potentiometer to be used for the output setting volume when used as the DC power supply and for the bias setting when used as AC power supply is equipped.
- Silent operation
- Operating noise became quiet by having employed the silent fan, and also it became easy to use.
- DC output meter
- 3-digit digital meter displays the DC value of the output voltage and current. (The option of rms indication is available.)
- Four-quadrant action
- DOP series can be used both as a high-speed response DC power supply and as a DC electronic load.
- Constant Voltage (CV)/Constant Current (CC)
- A single switch selects between CV and CC modes.
- Compact & Lightweight
- For maximum compactness and lightweight, the DOP series has been improved for a small footprint and easy carry.
- Complete protective function
- Protective function against overvoltage/overcurrent and protective measures against output short-circuit are completely provided.
- Master/Slave
- The option of master/slave control will resolve power shortages.
APPLICATIONS
- Inductive load such as coil and transformer
- Capacitive load such as electric double-layer capacitor
- Voltage regulation tests for in-vehicle electrical component
- Evaluation test for solar-panel related devices
- Various motor tests
- For surface treatment
Models
* Models with voltage, current, or frequencies not listed here are also available. Please contact the nearest sales office.
| Model | Maximum output | Frequency response (-3 dB) | ||
|---|---|---|---|---|
| Voltage | Current | Power | ||
| DOP5-30 | ±5 V | ±30 A | 150 W | DC to 20 kHz |
| DOP5-60 | ±60 A | 300 W | DC to 20 kHz | |
| DOP6-120 | ±6 V | ±120 A | 720 W | DC to 20 kHz |
| DOP10-15 | ±10 V | ±15 A | 150 W | DC to 20 kHz |
| DOP10-30 | ±30 A | 300 W | DC to 20 kHz | |
| DOP10-60 | ±60 A | 600 W | DC to 20 kHz | |
| DOP20-7.5 | ±20 V | ±7.5 A | 150 W | DC to 20 kHz |
| DOP20-15 | ±15 A | 300 W | DC to 20 kHz | |
| DOP20-30 | ±30 A | 600 W | DC to 20 kHz | |
| DOP20-60 | ±60 A | 1200 W | DC to 20 kHz | |
| DOP20-100 | ±100 A | 2000 W | DC to 20 kHz | |
| DOP25-6 | ±25 V | ±6 A | 150 W | DC to 30 kHz |
| DOP25-12 | ±12 A | 300 W | DC to 30 kHz | |
| DOP25-24 | ±24 A | 600 W | DC to 20 kHz | |
| DOP25-48 | ±48 A | 1200 W | DC to 20 kHz | |
| DOP25-80 | ±80 A | 2000 W | DC to 20 kHz | |
| DOP30-40 | ±30 V | ±40 A | 1200 W | DC to 20kHz |
| DOP45-3.3 | ±45 V | ±3.3 A | 150 W | DC to 20 kHz |
| DOP45-6.6 | ±6.6 A | 300 W | DC to 20 kHz | |
| DOP45-13.3 | ±13.3 A | 600 W | DC to 20 kHz | |
| DOP45-16 | ±16 A | 720 W | DC to 20 kHz | |
| DOP45-26.7 | ±26.7 A | 1200 W | DC to 20 kHz | |
| DOP45-44.4 | ±44.4 A | 2000 W | DC to 20 kHz | |
| DOP60-2.5 | ±60 V | ±2.5 A | 150 W | DC to 20 kHz |
| DOP60-5 | ±5 A | 300 W | DC to 20kHz | |
| DOP60-10 | ±10 A | 600 W | DC to 20 kHz | |
| DOP60-20 | ±20 A | 1200 W | DC to 20 kHz | |
| DOP60-33.3 | ±33.3 A | 2000 W | DC to 20 kHz | |
| DOP70-17 | ±70 V | ±17 A | 1200 W | DC to 20 kHz |
| DOP80-25 | ±80 V | ±25 A | 2000 W | DC to 20kHz |
| DOP120-2.5 | ±120 V | ±2.5 A | 300 W | DC to 20 kHz |
| DOP120-5 | ±5 A | 600 W | DC to 20 kHz | |
| DOP120-10 | ±10 A | 1200 W | DC to 20 kHz | |
| DOP150-2 | ±150 V | ±2 A | 300 W | DC to 20kHz |
| DOP150-4 | ±4 A | 600 W | DC to 20 kHz | |
| DOP150-8 | ±8 A | 1200 W | DC to 20 kHz | |
| DOP200-1.5 | ±200 V | ±1.5 A | 300 W | DC to 20 kHz |
| DOP200-1.75 | ±1.75 A | 350 W | DC to 20 kHz | |
| DOP200-3 | ±3 A | 600 W | DC to 20 kHz | |
| DOP200-3.5 | ±3.5 A | 700 W | DC to 20 kHz | |
| DOP200-6 | ±6 A | 1200 W | DC to 20 kHz | |
| DOP300-1 | ±300 | ±1 A | 300 W | DC to 20 kHz |
| DOP300-2 | ±2 A | 600 W | DC to 20 kHz | |
| DOP300-4 | ±4 A | 1200 W | DC to 20 kHz | |
Functions
Protections
Overvoltage Protection (OVP)
DOP series is equipped with overvoltage protection, which protects load by limiting voltage up to approx. 110% of the rated output voltage even at abnormal conditions.
* -LVc option (output voltage limiter) enables control of the output in 0 to approx 110% range.
Overcurrent Protection (OCP)
DOP series is also equipped with overcurrent protection, which protects power supplies and load by limiting current up to approx. 110% of the rated output current.
* -LCc option (output current limiter) enables control of the output in 0 to approx 110% range.
High speed overcurrent protection
DOP series 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 1 ms. Additional high-speed overcurrent protection can limit the pulse current of square waveforms or from capacitors at approximately 2 times more current of rating.
Output range
DOP series is a bipolar power supply that can perform four quadrant operations. They can supply (source) and absorb (sink) current in the field of the drawing on the right.
CV/CC setting selection
Inputting voltage via Vcon-in enables the control of output voltage V when CV control is selected and output current A when CC control is selected.
| in CV mode | in CC mode | |
|---|---|---|
| Vcon | Output voltage | Output current |
| -10 V | -Rating | -Rating |
| 0 V | 0 V | 0 A |
| +10 V | +Rating | +Rating |
Use of BIAS
When the "BIAS ON/OFF switch" is flipped to ON, bias can be changed with the "BIAS setting dial." Bias of the voltage can be set when CV control is selected, and that of the current can be when CC control is selected.
| in CV mode | in CC mode | |
|---|---|---|
| Scale | Output voltage | Output current |
| 000 (ccw) | -Rating | -Rating |
| 500 | 0 V | 0 A |
| 1000 (cw) | +Rating | +Rating |
Specifications
Options
- -LCc
-
Output current limit
Variable from 0 to approx 110% with front panel dial
- -LF
-
Floating ground (withstand voltage 200 Vdc)
- -LMsm: Master machine for master-slave control
-LMss: Slave machine for master-slave control -
By connecting a master machine and a slave machine with dedicated control lines, the master machine can control all slave machines at once. Parallel connection can increase the current that is insufficient for a single operation. Up to three units in total can be connected: one master unit and up to two slave units.
Note: Precautions for using the master-slave operation- Only master-slave connection is available for the same model.
- In parallel operation, the frequency range is narrower.
- It can also operate on a single.
- Factory adjustment is required when changing the master-slave combination.
- -LN
-
Output state auto-recovery (former: no power failure protection)
This option retains the output state when recovering from an input power interruption, such as an AC power switch ON/OFF or a power failure. Therefore, there is no need to reset the protection status by turning off the OUTPUT switch once.
Caution: If you turn on the power while the OUTPUT setting is ON, the output will be ON.
- -LPr
-
rms display
- -LVc
-
Output voltage limit
Variable from 0 to approx 110% with front panel dial
- -L(220V)
-
200 Vac to 240 Vac ±10% single phase, 50 Hz/60 Hz input
(150 W models and 300 W to 350 W models only)
How to Order
When ordering, add Option No. in the following order by alphabet, and number to Model No.
<Example> DOP25-12-LCcFMsmNPrVc(220V)
Accessories
- Function Generator
-
Dimensions
Tech Notes
Characteristic of amplifier
Rise time
(Stepping time): The response time is sometimes described by the rise time (as shown in the drawing on the right).
The rise time of an amplifier at a response speed of (= frequency bandwidth)
Fc (Hz) is generally acquired by "tr ≒ 0.35/fc."
Fall time tf is the same as tr.
Frequency bandwidth
: at 30 kHz or lower, tr = tf = around 12 μs
: at 20 kHz or lower, tr = tf = around 18 μs
Response speed
When accurate output waveforms are required, select an amplifier with a frequency bandwidth higher enough than the operating frequency. In the case of using sine waves, 3 times to 5 times more frequency bandwidth is required, and around 10 times more in the case of square waves in general. Inadequate bandwidth causes not only a decrease in the output amplitude but much difference between the input and output phases. Therefore, operating the product while monitoring the actual output waveforms is recommended.
Inductive load
Some inductance of inductive load may cause resonance in CC mode.
In such cases, connect a C-R series circuit between output terminals to prevent resonance.
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 Ω (at 0.1 μF) to 1000 Ω (at 1000 pF) of high-voltage resistance in the output in series. Please note that the frequency band is limited when using an amplifier with a capacitive load, as shown in the formula on the right.
In addition, when an amplifier is used for a corona discharge, a current higher than its rating will flow, affecting the amplifier badly. In this case, as well as when using an amplifier with a capacitive load, please install the output resistance and limit the current.
* Please avoid continuous input of the high-frequency signal, which reduces the output frequency of an amplifier. An amplifier will break because of an increase in internal loss.
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-
DOP series Datasheet
Date: 2024-12-12 rev.21
PDF (2,077 KB)
-
Bipolar Power Supplies Selection Guide Via External Signal input
Date: 2024-12-12 rev.07
PDF (4,770 KB)
-
Bipolar Power Supplies/Amplifiers Selection Guide
Date: 2023-10-17 rev.03
PDF (6,310 KB)
-
DOP series Instruction Manual
Date: 2023-4-11 rev.3.6
PDF (1,270 KB)
-
DOP series Outline Drawing (DXF, PDF)
Date: 2024-07-29
ZIP (2,515 KB)
Login Required
-
DOP series Datasheet
Date: 2024-12-12 rev.21
PDF (2,077 KB)
-
Bipolar Power Supplies Selection Guide Via External Signal input
Date: 2024-12-12 rev.07
PDF (4,770 KB)
-
Bipolar Power Supplies/Amplifiers Selection Guide
Date: 2023-10-17 rev.03
PDF (6,310 KB)
-
DOP series Instruction Manual
Date: 2023-4-11 rev.3.6
PDF (1,270 KB)
-
DOP series Outline Drawing (DXF, PDF)
Date: 2024-07-29
ZIP (2,515 KB)
In this website, we provide only the latest version of information including instruction manuals as of our products. Therefore, the newest versions of manuals on the website might be not same as the ones of products you purchased in the past.
