Programmable Linear DC Power Supply
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.
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.
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 are available between CH1 and CH2 to meet maximum 100 V or 10 A requirement.
4 digit LED digital tube display can show voltage, current and power simultaneously.
| Model | SK3323 | SK3325 | SK3503 | ||
| Channel | CH1 | 0~32V/0~3.2A | 0~32V/0~5.1A | 0~50V/0~3.2A | |
| CH2 | 0~32V/0~3.2A | 0~32V/0~5.1A | 0~50V/0~3.2A | ||
| CH3 | 1.8V/2.5V/3.3V/5.0V switchable, 3.2A (Max. output) | ||||
| Line Regulation | Voltage | CH1, CH2 | ≤1×10-4+2mV | ||
| CH3 | ≤1×10-4+3mV | ||||
| Current | CH1, CH2 | ≤1×10-4+2mA | |||
| Load Regulation | Voltage | CH1 | ≤1×10-4+3mV | ≤1×10-4+8mV | ≤1×10-4+3mV |
| CH2 | |||||
| CH3 | ≤1×10-4+3mV | ||||
| Current | CH1, CH2 | ≤1×10-4+2mA | |||
Programming /Readback Accuracy | Voltage | CH1 | ≤±(0.5%+30mV) | ≤±(0.5%+60mV) | |
| CH2 | |||||
CH3 (no readback) | ≤±7% | ||||
| Current | CH1 | ≤±(0.5%+30mA) | ≤±(1%+60mA) | ≤±(0.5%+30mA) | |
| CH2 | |||||
CH3 (no readback) | ≥3.2A | ||||
| Ripple and Noise | Voltage | CH1, CH2 | ≤1mVrms | ≤1.5mVrms | |
| CH3 | ≤1mVrms | ||||
| Current | CH1, CH2 | ≤3mArms | ≤5mArms | ≤3mArms | |
| Display resolution | Voltage | CH1, CH2 | 10mV | ||
| Current | CH1, CH2 | 1mA | |||
| Display Digits | Voltage | 4 digits | |||
| Current | 4 digits | ||||
| Other function | Auto switch of serial and parallel | ||||
| General Characteristics | Rated Voltage | AC220(1±10%)V | |||
| Rated Power | 500W 670VA | 600W 800VA | |||
| Rated Frequency | 50/60(1±5%)Hz | ||||
| USB charging Interface | 5V 1A | ||||
| Remote Interface | USB, LAN (option) | ||||
| Dimension | 226×140×303mm3 | 226×140×333mm3 | |||
| Weight | 8KGs | 9KGs | |||
Power Cord
CD