Variable DC Power Supplies
Select a voltage class below to view technical specifications, compliance standards, and load regulation limits. All power supplies listed are rated for continuous industrial duty cycles.
800V DC
Professional 0-800V Adjustable Precision Source
Leading-edge 800V testing solutions for next-generation EV platforms (Porsche/Audi/Hyundai architectures) and high-power industrial grids.
600V DC
Professional 0-600V Adjustable Precision Source
600V variable DC power supplies. Designed for solar string inverter testing and industrial drive variable frequency drive (VFD) DC bus simulation.
500V DC
Professional 0-500V Adjustable Precision Source
500V industrial DC power supplies. High voltage testing solution for railways, renewable energy, and scientific research.
400V DC
Professional 0-400V Adjustable Precision Source
400V DC power sources for EV ecosystem testing. Simulates 400V native electric vehicle battery architectures and charging components.
300V DC
Professional 0-300V Adjustable Precision Source
High voltage 300V variable DC power supplies. Critical for testing energy storage systems and photovoltaic inverters.
250V DC
Professional 0-250V Adjustable Precision Source
250V laboratory power supplies. Provides headroom over 220V/230V commercial standards for stress testing and validation.
220V DC
Global Mains Simulation & Calibration
The 220V rating is the global standard for high-voltage DC simulation. Essential for testing equipment designed for European and Asian markets.
200V DC
Professional 0-200V Adjustable Precision Source
200V adjustable power supplies. Suitable for testing 100V-200V rated capacitors, fuses, and global voltage components.
150V DC
Professional 0-150V Adjustable Precision Source
150V variable DC sources for aerospace and specialized industrial driver testing. Delivers stable 0-150V DC power.
120V DC
US Standard Testing & NEMA Simulation
In the context of North American electrical engineering, the 120V variable DC power supply is a critical compliance instrument. Designed to encompass the full saturation range of the US mains standard (nominally 110V-120V).
100V DC
Professional 0-100V Adjustable Precision Source
100V high-precision DC power supplies. Essential for testing 72V-96V battery systems and high-voltage DC components.
80V DC
Professional 0-80V Adjustable Precision Source
80V variable DC power supplies for industrial testing. Robust 0-80V output for higher voltage DC motors and automation equipment.
60V DC
Professional 0-60V Adjustable Precision Source
Professional 60V variable DC power supplies. Feature-rich 0-60V adjustable units with fine & coarse current regulation for 48V system testing.
50V DC
Professional 0-50V Adjustable Precision Source
50V DC adjustable power sources for telecom (48V) and network equipment testing. Provides clean, stable 0-50V output.
30V DC
Professional 0-30V Adjustable Precision Source
Standard 30V lab bench power supplies. The industry workhorse for general electronics lab, education, and maintenance repair.
20V DC
Professional 0-20V Adjustable Precision Source
Versatile 20V variable DC power supplies. Perfect for automotive component testing (12V nominal) and portable electronics development.
15V DC
Professional 0-15V Adjustable Precision Source
Precision 15V DC power supplies for low-voltage logic circuits and semiconductor testing. Ideal for 0-15V adjustable requirements.
Looking for Standard 30V, 60V, or 1000V+ Models?
This category index focuses on specialized high-voltage industrial nodes. For our complete catalog of general-purpose lab bench supplies and custom voltage configurations, visit our main engineering portal.
General Selection FAQ
Linear vs. Switching: Which topology do I need?
Choose Linear if your application is highly sensitive to noise (e.g., RF communications, audio R&D, low-level signal processing), as they offer the lowest ripple ( often <1mV). Choose Switching for high-power applications (motors, electrolysis, battery charging) where efficiency and compact size are more critical than absolute signal purity.
What does "Variable" or "Programmable" actually imply?
A "Variable" supply allows manual adjustment of voltage and current via front panel knobs. A "Programmable" supply adds digital interfaces (USB, RS232, LAN) allowing a computer to control the output sequence, making them essential for automated production line testing and data logging.
How much "headroom" should I leave for voltage?
We generally recommend selecting a power supply with at least 20-25% more voltage capacity than your nominal operating requirement. This allows for over-voltage stress testing and ensures the power supply runs cooler by not operating at 100% duty cycle constantly.
Datasheets
Full PDF specifications, mechanical drawings, and communication protocol manuals (SCPI/Modbus) are available on individual product pages.
Support
Require a custom voltage or modification? Our application engineers can assist with specific load matching.