SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503
SK3323/3325/3503

SK3323/3325/3503

Programmable Linear DC Power Supply

Output
50 V/3.2 A
Display Resolution
10 mV/1 mA
Display Digits
4 digits
Product Model
SK3323/SK3325/SK3503
Overview
Design Features
Specification
Accessory

The SK33XX series programmable linear DC power supplies have three independent outputs – two sets of adjustable voltage/current and a fixed set of selectable voltage1.8V, 2.5V, 3.3V and 5V. it has three available operation modes–independent, series and parallel modes. All make this series become a high performance-to-price ratio instrument.


Applications

  • Electronics Testing & Development

 Multi-voltage circuit testing – Powering different sections of a circuit (e.g., analog, digital, and RF) with separate voltages.  

 Op-amp and amplifier testing – Providing positive, negative, and bias voltages simultaneously.  

 Microcontroller & FPGA development – Supplying core voltage, I/O voltage, and auxiliary power.  

  • LED Testing & Driver Development 

 RGB LED testing – Supplying different voltages/currents for red, green, and blue LEDs.  

 LED driver validation – Testing constant current/voltage modes. 

  • Automotive & Aerospace Testing 

 ECU (Electronic Control Unit) testing – Powering multiple subsystems (sensors, actuators, communication modules).  

 Avionics testing – Simulating different aircraft power rails (e.g., 5V, 12V, 28V).  

  •  Research & Education

 Physics experiments – Powering electromagnets, lasers, or sensors at different voltages.  

 University labs – Teaching students about multi-rail power supply systems.  

  • Industrial Automation & Control Systems  

PLC (Programmable Logic Controller) testing – Providing 24V for relays, 5V for logic, and 12V for sensors.  

Motor driver testing – Powering control logic, gate drivers, and feedback circuits separately.  

  • Telecommunications  

RF & communication modules – Powering mixers, PLLs, and amplifiers with different bias voltages.  

Optical transceiver testing – Supplying multiple voltage levels for laser drivers and signal conditioning circuits. 


Three channels

SK33XX Series Programmable DC Power Supplies have three channels, which can output maximum 50 V/5.1A electronic signal on CH1 and CH2. CH3 can output some fixed voltage signals.

10 mV/1 mA resolution

SK33XX Series Programmable DC Power Supplies has 10 mV/1 mA resolution, which can meet the high requirement in the electronic products’ designing and manufacturing, repairing process.

Auto switch serial and parallel

Auto switch serial and parallel are available between CH1 and CH2 to meet maximum 100 V or 10 A requirement.

4 digit LED digital tube display

4 digit LED digital tube display can show voltage, current and power simultaneously.

ModelSK3323SK3325SK3503
ChannelCH10~32V/0~3.2A0~32V/0~5.1A0~50V/0~3.2A
CH20~32V/0~3.2A0~32V/0~5.1A0~50V/0~3.2A
CH31.8V/2.5V/3.3V/5.0V switchable,
3.2A (Max. output)
Line RegulationVoltageCH1, CH2≤1×10-4+2mV
CH3≤1×10-4+3mV
CurrentCH1, CH2≤1×10-4+2mA
Load RegulationVoltageCH1≤1×10-4+3mV≤1×10-4+8mV≤1×10-4+3mV
CH2
CH3≤1×10-4+3mV
CurrentCH1, CH2≤1×10-4+2mA

Programming

/Readback Accuracy

VoltageCH1≤±(0.5%+30mV)≤±(0.5%+60mV)
CH2

CH3

(no readback)

≤±7%
CurrentCH1≤±(0.5%+30mA)≤±(1%+60mA)≤±(0.5%+30mA)
CH2

CH3

(no readback)

≥3.2A
Ripple and NoiseVoltageCH1, CH2≤1mVrms≤1.5mVrms
CH3≤1mVrms
CurrentCH1, CH2≤3mArms≤5mArms≤3mArms
Display resolutionVoltageCH1, CH210mV
CurrentCH1, CH21mA
Display DigitsVoltage4 digits
Current4 digits
Other functionAuto switch of serial and parallel
General CharacteristicsRated VoltageAC220(1±10%)V
Rated Power500W 670VA600W  800VA
Rated Frequency50/60(1±5%)Hz
USB charging Interface5V 1A
Remote InterfaceUSB, LAN (option)
Dimension226×140×303mm3226×140×333mm3
Weight8KGs9KGs



SEE ALL
STANDARD ACCESSORIES
Power Cord

Power Cord

CD

CD

OPTIONAL ACCESSORY
LAN Cable
LAN Cable