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  • R4K-36 series | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_02 | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_03 | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_04 | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_02 | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_03 | DC power supply Benchtop | Matsusada Precision
  • R4K-36 series_04 | DC power supply Benchtop | Matsusada Precision

PALMTOP SIZE VARIABLE DC POWER SUPPLY

  • Voltage range: 2V to 40V
  • Current: 0.1A to 4A
  • Power: 0.2W to 36W
  • Excellent quietness

Ultra Compact, Programmable DC Power Supply

The R4K-36 is the world’ s smallest “palm-sized” variable DC power supply with 36 watts output.

This DC power supply is very compact, yet multifunctional and high performance. As the models can set and output the current at the 0.1mA increment, the power supply is best for applications which require precise control of current such as evaluation testing LED or OLED light.

All the models have the 4-digit output voltage and current meters for precision adjustable voltage and current. Digital interface is standard available. These strong points allow you to use R4K-36 for the usage such as various quality tests and the production line of electronic components.

FEATURES AND BENEFITS

  • Compact and light-weight space-saving design
  • Output current controlling in units of 0.1mA
  • Excellent quietness with natural air-cooling system
  • Unique low noise power conversion technology for research application
  • Multiple units operation with master/slave and digital interface
  • Very quiet due to the adopting natural air-cooling system without a cooling fan
    Suitable for applications requiring the quietness
  • Four-digit meter
  • High resolution D/A, A/D converter integrated
  • Digital Interface is also available.
  • Programmable waveform with pulse and ramp sequence function without external signal
  • Output voltage and output current can be set speedily.

When setting output voltage and output current by the rotary encoder on the front panel, every time the fine switch is pressed, the setting digit on the digital display will be switched. In the case, setting a small output value or changing the setting value widely, the setting can be done speedily. (Fine switch cannot be used when output value is set by remote controlling.)

Ultra Compact !

You can realize how small it is with comparison to a mouse.

Ultra-compact!
Compared to stationeries…

Models

Model Output Ripple *1 Minimum setting unit *2 AC input
Voltage
[V]
Current
[A]
Power
[W]
Voltage
[mVrms]
Current
[mArms]
Voltage
[mV]
Current
[mA]
Voltage Current
[typ.]
115 V 230 V *3
R4K2-0.1 0 to 2 V 0 to 0.1 A 0.2 W 1 mV 1 mA 1 mV 0.1 mA 115 V ±10% *2
230 V ±10%
50/60 Hz
single phase
0.1 A 0.05 A
R4K36-0.1 0 to 36 V 0 to 0.1 A 3.6 W 2 mV 1 mA 10 mV 0.1 mA 0.5 A 0.25 A
R4K8-3 0 to 8 V 0 to 3 A 24 W 4 mV 4 mA 1 mV 1 mA 1 A 0.5 A
R4K6-4 0 to 6 V 0 to 4 A 24 W 5 mV 8 mA 1 mV 1 mA 1 A 0.5 A
R4K40-0.6 0 to 40 V 0 to 0.6 A 24 W 3 mV 1 mA 10 mV 0.1 mA 1 A 0.5 A
R4K36-1 0 to 36 V 0 to 1 A 36 W 5 mV 5 mA 10 mV 1 mA 1 A 0.5 A
R4K18-2 0 to 18 V 0 to 2 A 36 W 5 mV 5 mA 10 mV 1 mA 1 A 0.5 A
  1. The ripple applies from 10% to 100% of the rated output.
  2. The minimum setting unit of the instrument panel. With the remote control, more detailed settings are available. Go to "Various Digital Control Functions".
  3. -L(230V) option

Functions

Multi Setting Function

Function to memorize three different voltage and current settings in addition to standard preset function. There is no need to adjust the output when different settings and convenient functions for the production inspection process or testing require frequent data sampling.

Multi Setting Function |Benchtop DC Power Supplies | Matsusada Precision
Multi Setting Function2 |Benchtop DC Power Supplies | Matsusada Precision

Sink Current Suppression

When supplying power to loads with capacities like batteries and capacitors, the sink current suppression is used to reduce the reverse current flowing from the load to the unit in order to prevent a voltage drop on the load as the output is OFF or the set voltage is lowered.

Note
IReverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when the load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)
Sink Current/Sink Current Prevention Function

Delay Trigger Function

Function to delay the OUTPUT ON/OFF time. It is possible to use in case a single unit of R4K-36 series is used, and also when connecting several Matsusada Precision power supplies using master/slave connection terminal and output voltage/output current are set individually, delay trigger function can be used.

(When -LUs1 or -LRmf option is selected, only one unit of R4K-36 series can be used.)

Delay Trigger Function

Two Mode Lock Function

Function to select two different lock functions for two different purposes. "Full Lock" locks all the function on front panel, and "Normal Lock" locks all the function except for ON/OFF. "Full Lock" mode shall be good in case misoperation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid misoperation but secure the way for emergency stop of the power supply. You can select the best mode according to your level of "Security".
(In both modes, emergency stop is possible with Power Switch.)

Full LOCK

Lock all the functions other than reset lock mode, and effective for the purpose to avoid misoperation when controlled.

Full LOCK

Normal LOCK

Lock voltage and current setting dial, and effective for the purpose of avoiding changing output setting by mistake or when an easy emergency stop is required.

Normal LOCK

Remote Control Functions

External output ON/OFF

External output ON/OFF

* +S is common. So external control voltage shall be input with +S as reference. Otherwise, it can cause failure.

Remote sensing

Remote sensing

Compensate the voltage drop (V0-VL) due to resistance of output lead or drop of stability by contact resistance.
(maximum 0.5 V)

Digital interface

Enable digit control via LAN/USB/RS-232C/RS-485/GPIB as well as one control with Master/Slave.

Master/slave
Master/slave |Benchtop DC Power Supply | Matsusada Precision

Adapters (Sold separately)

To use the digital interface, you need to prepare a digital interface adapter separately. The following interface adapters are available according to the communication method of your controller port.

Adapter for LAN: CO-E32m

Total 16 units can be connected to one CO-E32m.
LAN cable is not provided.

Adapter for LAN: CO-E32m |Benchtop DC Power Supply | Matsusada Precision

Adapter for USB: CO-U32m

Total 16 units can be connected to one CO-U32m.
USB cable is not provided.

Adapter for USB: CO-U32m |Benchtop DC Power Supply | Matsusada Precision

Adapter for RS-232C (9 pin): CO-MET2-9
Adapter for RS-232C (25 pin): CO-MET2-25
Adapter for RS-485 (25 pin): CO-MET4-25

[Dsub⇔Modular jack] Total 16 units can be connected.

Adapter for RS-232C: CO-MET2-9< |Benchtop DC Power Supply | Matsusada Precision

Adapter for GPIB: CO-G32m

Total 16 units can be connected to one CO-G32m.
GPIB cable is not provided.

Adapter for GPIB: CO-G32m |Benchtop DC Power Supply | Matsusada Precision

(A) CO-M cable
A two-meter cable is provided in each unit without an interface option. If you need a longer cable, please consult with our sales staff.

Various Digital Control Functions

Control
function
Output ON/OFF setting
Status output
(fault/output/OVP/OCP/OT/ACF/reversible sense connection)
Maximum 16 units digital control
Collective control function for multiple units
Write function Output voltage setting
Output current setting
  • Percent mode (100.00%)
  • * voltage current value mode (maximum rated voltage and current value)
OVP setting
OCP setting
  • Percent mode (100.0%)
  • voltage current value mode (overvoltage/overcurrent protection value)
Reading function Output voltage reading
Output current reading
  • Percent mode (100.00%)
  • *voltage current value mode (maximum rated voltage and current value)
Output voltage setting
Output current setting
  • Percent mode (100.00%)
  • *voltage current value mode (maximum rated voltage and current value)
OVP setting/OCP setting
  • Percent mode (100.0%)
  • voltage current value mode (overvoltage/overcurrent protection value)

* Minimum value of each model is the same as the minimum display of the front panel meter.
* When -LUs1 or -LRmf options is selcted, the functions are not provided.

Dual Tracking, Multiple Outputs

Dual tracking control enables both positive and negative outputs simultaneously in master/slave operation.

Multi outputs and various versatile operations are also possible by combining the above dual tracking control and slave local mode. Positive and negative output (+V, -V) of dual tracking control and set output voltage of slave local mode can be output simultaneously by turning on the master unit.
Go to Operations for connection details.

Dual Tracking

Dual Tracking

Multiple Outputs

Multiple Outputs

Example of Connection and Operation

Using the same multiple units of the R4K-36 series, the output voltage and output current can be increased by connecting the outputs in series or parallel.
Local control or digital master/slave control is recommended for control.
The external output ON/OFF terminal LS- is connected to the + output, so do not connect it to the commons of other power supplies.

Series connection

The total output voltage is up to 250 V.
The output voltage exceeding 250 V is unavailable in a series connection.
The output current will be the smallest value.

Series operation

Parallel connection

Use the same value for voltage setting in parallel connection.
The output current is the sum of each current.
In order to prevent damage, set the OVP level of all the power supplies to the maximum.

Parallel operation

Split connection

Positive and negative outputs are available, respectively.

Split operation

Two Features in -LDe Option

Pulse/Ramp sequence, Master follow function

Using a single power supply unit, the following functions in output control A to D are available.

A. Pulse

Sequential operation is possible by using voltage and current set on each memory a, b, and c in combination with a multi-set function. Not only continuous operation, but also it is possible to specify the times. It is best fit to evaluation tests for products as various operations, like as repeat of a and b only or a repeat of b, c and off only, are enabled by setting time of memory a, b, c and off to 0.0.

Pulse Sequence

ta, tb, tc, and toff can be set respectively with the range of 0.0 second, 1.0 seconds to 99.9 hours.

B. Ramp

It enables to make ramp action up to set voltage or current (or from the set voltage or current to 0 V or 0 A). It is useful to like to rise (reduce) voltage or current slowly.

* As for ramp operation, you can select "Doth of set voltage and current", "Voltage setting only", or "current setting only".

Ramp

t1 and t2 can be set range of 0.0 second to 999 seconds.

C. Pulse + Ramp

It is also possible to use pulse combined with ramp action. If the multi-set function is combined with the too, it is able to make pulse action by using voltage or current set on memory a, b and c. Not only continuous operation, but also it is possible to specify the times. It is useful in various aspects as it is possible to rise (reduce) voltage or current slowly up to 3 set values.

Combination of Pulse and Ramp Sequence

t1 to t4 can be set range of 0 to 999 seconds.
ta, tb, tc, and toff can be set range of 0.0 seconds to 99.9 hours.

D. Master Follow

Pulse sequence actions at master-slave and output signal to slave units at ramp action are transmitted. By this function, it is possible to make slave units to output on different output conditions from the master unit.

* The master follow function is only available with the standard interface.

Master follow

Note: The operation accuracy of the timer when sequencing is 0.5%. Be careful when you use it by the long-term running operation.

Sweep control programmng

Easy programming of sweep operation!

With the -LDe option, the available sweep commands are adapted by setting the arrival time and arrival conditions (voltage/current).
Since there is no need to set commands that are repeated step by step, it is easier to create new programs and change conditions, saving a great deal of operation time. It also contributes to securing time for development, research, etc.
For details, download the datasheet below.

Specifications

For details, download the datasheet below.

Options

-LDe

Pulse/Ramp sequence, Master follow function
Please refer to Function for Pulse & Ramp Sequence and Master Follow

-LH

High isolation voltage
With isolation voltage by ±1kV, more R4K-36 series power supplies are available in series connection.

-LIc

Output current accumulation function
Accumulate the output current and display its value (up to 100 Ah). The accumulated value is stored even when the output is off. Also, accumulated values which stop the output can be set preliminarily; it is very suitable for applications such as controlling plating solutions. * Please consider the location of usage. A high-humidity environment can be the cause of failure and corrosion.

-LRmf *1 *2

Analog remote control
Added analog remote control terminal
Output voltage and current can be controlled by external voltage or resistance.
+S is common. So external control voltage shall be input with +S as reference.

Remote multi-function
-LUs1 *1 *2

USB interface board
Enable digital control with USB. One power supply can be connected to one USB port that which the computer equipped. In case the number of the USB port of the computer is not enough, use USB HUB. However, it may not work correctly, depending on the USB HUB.

OS of USB driver: Microsoft Windows XP/Vista/7/8/10 (Both 32-bit version and 64-bit version are available.)

Microsoft Windows is a registered trademark of Microsoft Corporation in the United States and other countries.

-L(Mc0.5)

Communication cable length 0.5 meters *2
Change the length of the CO-M cable to 0.5 meters, 0.15 meters long. Select one of the two types above.

-L(Mc0.15)

Communication cable length 0.15 meters *2
Change the length of the CO-M cable to 0.5 meters, 0.15 meters long. Select one of the two types above.

-L(200V)

200 Vac ±10% input
Refer Lineup for input current.

-L(230V)

230 Vac ±10% input Refer Lineup for input current.

  1. When these options are selected, standard digital interface will not be equipped.Also, these options cannot be equipped together.
    When these options are selected, the standard digital interfaces are not supplied. Also, the dual tracking control and the multiple outputs of the standard functions are not provided.
  2. -LUs1 or -LRmf option cannnot be equipped together with -L(Mc0.15) and -L(Mc0.5) option.

How to Order

When ordering, add Option No. to Model No. in alphabetical order followed by numerical order.
Example:
R4K36-1-LDcHIcUs1(200V)
R4K18-2LDeH(Mc0.5)(200V)

Accessories

R4K-36QC

Special designed case to bind five-unit of R4K-36 series
The power ON/OFF switch will be consolidated, and also AC input line on the rear panel will be bundled to one.
Also, the handle on the top makes it easy to carry.

R4K-36 series | DC power supply Benchtop | Matsusada Precision
RMO series

Rack mount shelf
[RMO-133H-RK, RMO-133H-RK2, RMO-133H-RK3]
- Up to 10 units can be installed in the rack shelf for a 19 inches cabinet, and each unit is easily attached and detached.
- It is suitably designed for system operation.
- A forced-air cooling fan is built-in.

R4K-36 series | DC power supply Benchtop | Matsusada Precision
Power supply stand

For one unit operation...

R4K-36 series | DC power supply Benchtop | Matsusada Precision
AC Input Cable
Standard CABLE TYPE1 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 125 V / 10 A 2.5 meters
Standard
For -L(200V)/-L(230V) option
CABLE TYPE3 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters
Sold separately CABLE TYPE4 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters
Sold separately CABLE TYPE13 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters
Sold separately CABLE TYPE20 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters

Application software for power supplies and electronic loads

PSS2en series
PSS2en is the dedicated software which can actuate various power supplies, electronic loads and digital controller for power supplies manufactured by Matsusada Precision Inc. with simple set up.
It is the perfect for the aging test, the burn-in test and the withstand voltage test for electronic parts, and for the endurance test, intermittent/continuous operation test or various simulation test for electric component of automobile.

For details, refer to PSS2en page.

PSS2en | Application software for power supplies and electronic loads | Matsusada Precision

Dimensions

For details, download the datasheet below.

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