What it is

The EA-PSI 9000 DT is a microprocessor-controlled programmable desktop DC power supply for the bench. Its flexible autoranging output holds full rated power across a wide voltage and current range, and a built-in additional output filter gives notably low ripple. Front-panel output terminals, a color touch display, and a carrying handle with tilt stand make it a lab, school, or workshop instrument, with power ratings from 320 W to 1500 W spanning 0–40 V to 0–750 V and 0–4 A to 0–60 A.

• Programmable desktop DC power supply, source output, autoranging
• Output power 320 W up to 1500 W
• Output voltages 0–40 V up to 0–750 V; currents 0–4 A up to 0–60 A
• High efficiency up to 92%; low ripple via a built-in additional output filter
• Wide AC supply 90–264 V with active power factor correction
• Regulation with internal resistance simulation and regulation (CV, CC, CP, CR)
• Integrated true function generator with up to 99 configurable sequences
• Intuitive multilingual color touch panel (English, Russian, Chinese, German)
• Front output terminals; front USB for loading, saving, and logging
• Galvanically isolated interfaces: analog, USB, Ethernet
• Protections OVP, OCP, OPP, OT; discharge circuit on 200 V and higher models
• 40 V models compliant to SELV; desktop enclosure with carrying handle and tilt stand
• SCPI command set and ModBus RTU support

What it is used for

Some of the use cases for the PSI 9000 DT include:

• Bench supply for lab, school, or workshop — a wide autoranging voltage/current envelope from a compact desktop unit with front output terminals
• Automated and remote-controlled test — analog and digital (USB, Ethernet) interfaces with SCPI and ModBus RTU, plus Windows control software and LabVIEW-ready remote control
• Function-generated and sequenced testing — the integrated function generator applies sine, triangle, rectangle, trapezoid, ramp, and arbitrary waveforms, with up to 99 sequences saved to and loaded from a USB stick
• Applications needing supervision and safe shutdown — built-in OVP/OCP/OPP/OT supervision reduces external monitoring hardware, and 200 V and higher models discharge the output below 60 V DC after switch-off

Source and control

Autoranging output with low ripple. The flexible autoranging output stage provides a higher voltage at lower current, or a higher current at lower voltage, always limited to the adjustable power set value or the rated power, so one unit covers a wide range of applications. Compared with other supply series, an additional built-in output filter achieves much lower ripple and low noise on the DC output. Voltage, current, and power adjust continuously from 0% to 100%, manually or under analog or digital remote control.

Regulation and resistance simulation. All models regulate in constant-voltage, constant-current, and constant-power modes and add internal resistance simulation and regulation (CR), set from the rotary knobs, a numeric pad, or the analog interface, which accepts U, I, P, and R control signals at 0–5 V or 0–10 V.

Function generator. Every model includes a true function generator that applies sine, triangle, rectangle, trapezoid, ramp, and arbitrary waveforms to the output voltage or current, with full parameter control (Y offset, time/frequency, amplitude). The arbitrary base generator builds complex function sets in up to 99 sequences for development and production testing, saved to and loaded from a standard USB stick via the front USB port.

Handling and protection. A color TFT touch panel with two rotary knobs, a pushbutton, and two LEDs shows all set and actual values; the screen language is selectable (English, Russian, Chinese, German) and controls can be locked against accidental operation. Adjustable OVP, OCP, and OPP thresholds shut the output off and raise a status signal when reached, an overtemperature protection guards against overheating, and 200 V and higher models include a discharge circuit that sinks the output below 60 V DC after switch-off.

Interfaces and software

Digital interfaces are galvanically isolated: a USB type B port for communication, a front USB type A port for storage, and an Ethernet port. A built-in isolated 15-pole D-Sub analog interface sets and monitors U, I, P, and R at 0–5 V or 0–10 V with status inputs and outputs. Control uses SCPI and ModBus RTU, and the included Windows software provides a clear set/actual interface, direct SCPI/ModBus entry, firmware update, and semi-automatic table control (Sequencing); the optional Multi Control app monitors and controls up to 20 units in one window with sequencing and data logging.

Why engineers pick it

Bench-ready with low noise. A compact desktop enclosure with front terminals, a carrying handle, and tilt stand, plus an additional output filter for notably low ripple, suits sensitive bench work.

One unit covers a wide envelope. Autoranging holds full rated power across a broad voltage and current range rather than at one fixed operating point.

Test intelligence built in. A true function generator with up to 99 USB-stored sequences and internal resistance simulation put much of the test routine inside the instrument.

Less external supervision. Built-in OVP/OCP/OPP/OT supervision on all output parameters reduces the need for separate monitoring hardware and software.

Configuring and ordering

The series resolves along power class and model.

• Power class sets the rating — 320 W, 640 W, 1000 W, or 1500 W.
• Model sets the voltage-and-current envelope, from 0–40 V / 0–20 A through 0–200 V / 0–4 A at 320 W, up to 0–40 V / 0–60 A through 0–750 V / 0–6 A at 1500 W. Each model carries its own ordering number.

Configure your PSI 9000 DT on this page and buy it directly. For integration into an automated test system or guidance on model selection, contact W5 Engineering and we will help you specify it.