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

R4K-36 series are ultra-compact, high-performance DC power supplies which achieve sufficient output of 36 W in the "palm-sized".

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

All models include the four-digit output voltage/current meter and digital interfaces as standard. These strong points allow you to use R4K-36 for the usage such as various quality tests and the production line of electronic components.

We pursue usability !

  • Compact and light-weight space saving design
  • 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 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 rotary encoder on front panel, every time fine switch is pressed, setting digit on digital display will be switched. In case, setting small output value or change setting value widely, 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(rms) Minimum setting unit *2 AC input
Voltage Current Power Voltage Current Voltage Current 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 remote controlling, 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 setting and convenient function for production inspection process or testing which 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 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 single unit of R4K-36 series is used, and also when connecting several Matsusada 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 mis-operation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid mis-operation but secure the way for emergency stop of 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 function other than reset lock mode, and effective for purpose to avoid mis-operation when controlled.
Full LOCK

Normal LOCK

Lock voltage and current setting dial, and effective for purpose to avoid changing output setting by mistake or when easy emergency stop is required.
Normal LOCK

Remote Control Functions

Remote switch ON/OFF

Remote switch 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 (separately sold)

To use the digital interface, you need to prepare an 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 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 (over voltage/over current 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 (over voltage/over current protection value)

* Minimum value of each model is same as minimum display of front panel meter.

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 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

Operations

In R4K-36 series, the output voltage and current can be increased by connecting the same models in series or parallel operation.
As to the control, the use of local control or digital master/slave control is recommended. The common of the external input control connector is connected to +output of the power supply.
So, do not connect it to any common of other power supplies.

Series operation

The total output voltage can be up to 250 V. Series operation is not available for the total output voltage exceeding 250 V. In that case, the output current comes to the one of the smallest power supply.

Series operation

Parallel operation

Please use the same voltage setting for parallel operation. The output current comes to the sum of each current. In order to prevent damages, please ensure to have the maximum level of OVP of the power supply.

Parallel operation

Split operation

Positive and negative outputs are available respectively.

Split operation

Specifications

For details, download the datasheet below.

Options

-LDe: Pulse/Ramp sequence, Master follow function

above output control, between A to D is available.

A. Pulse Sequence

According to the combination with Multi Setting Function, the sequence operation is available by using the voltage and current settings stored respectively in Memory a, b, and c. Also, setting the number of operations is provided, let alone continuous operation. As the set time of Memory a, b, c or off is set to 0.0, the output control has a great variety of operations such as continuous operation in both of Memory a and b or among Memory b, c, and off. Thus, the function is ideal especially for product evaluation tests.

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

In this function, the ramp operation is available within the voltage and current settings (or up to 0 V/0 A starting the said values). It is excellent for increasing or decreasing the voltage and current values gradually. The function can also effectively reduce the load damage caused by overshooting.

* As for the lamp operation, you can select "Both setting 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. Combination of Pulse and Ramp Sequence

Features of pulse sequence operation and ramp sequence operation can be combined for more convenient operation. In addition, by adding multi set function, sequence operation can be operated using stored voltage and current settings in each memory. The setting of repetition to say nothing of a continuous driving can be set. For example it is possible to slowly ramp up and down the voltage and current to the three different settings, and so, it is useful for various scenes.

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 second to 99.9 hours.

D. Master follow

When the pulse sequence operation and the ramp work master-slave, the output signal to the slave unit is transmitted. The slave unit can be output in an output status different from the master unit. (Master follow function cannot be used with -LUs1 option.)

* 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.

-LH: Higher isolation voltage

This option make the isolation voltage to be ±1 kV, which enable extended capability of series operation.

-LIc: Output current accumulation function

Accumulate the output current and display its value (up to 100 Ah). Accumulated value is stored even when output is off. Also, accumulated value which stop the output can be set preliminarily, it is very suitable to the application such as controlling plating solution.

* Please consider the location of usage. High humidity environment can be the cause of failure and corrosion.

-LRmf: Remote multi function *1 *3

It is possible to control output voltage and output current by external voltage or external resistance.

+S is common. So external control voltage shall be input with +S as reference.

-LRmf option

Remote multi function
Vout, Iout Vcon, Icon R
0 to MAX 0 to approx. 10 Vdc 0 to approx. 10 kΩ

-LUs1: USB interface board *1 *2 *3

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

OS: 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-meter *3

Change the length of communication cable 2-meter to 0.5-meter.

-L(Mc0.15): Communication cable length 0.15-meter *3

Change the length of communication cable 2-meter to 0.15-meter.

-L(200V): 200 Vac ±10% input

-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.
  2. For detailed specification of USB and digital interface, please refer data sheet of CO/USB series.
  3. -LUs1 or -LRmf option cannot 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

AC Input Cable

[Standard] CABLE TYPE1 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 125 V / 10 A
[Standard]
For -L(200V) option
CABLE TYPE3 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A
[Sold separately] CABLE TYPE4 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A

Dimensions

For details, download the datasheet below.

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