Ametek / Elgar / Sorensen DCS33-33EM1M47 1 kW Power Supply

The Ametek / Elgar / Sorensen DCS33-33EM1M47 is a 1 kW programmable switching DC power supply engineered for development, system integration, and burn-in testing. High-frequency switching regulator topology delivers high power density in a compact, low-profile chassis. The unit operates in both constant voltage and constant current modes with automatic crossover, providing stable, continuously variable output across any volt/amp combination within rated limits.

Front-panel ten-turn potentiometers enable precise adjustment with simultaneous digital readout of voltage and current. Remote sensing compensates for lead losses, while remote programming capability supports bench and automated test environments. Built-in overvoltage protection (OVP) and shutdown circuitry safeguard connected equipment.

Technical Specifications

• Maximum output voltage: 0–33 VDC (note: M47 variant may limit to 28 VDC)


• Maximum output current: 0–33 ADC


• Output power: 1 kW continuous at any combination within rated limits Constant Voltage Mode


• Line and load regulation: 0.2%


• Output ripple (RMS): 10 mV


• Output noise (peak-to-peak): 100 mV


• Transient response time: 500 µs typical


• Temperature coefficient: 0.02%/°C


• Voltage drift: 0.05% Vmax typical


• Programming constant: 151.5 Ω/V or 0–10 V = 0–100% V₀ / 0–5 V = 0–100% V₀ Constant Current Mode


• Line and load regulation: 0.2%


• Output ripple (RMS): 10 mA


• Temperature coefficient: 0.03%


• Current drift: 0.05% I₀ Max typical


• Programming constant: 151.5 Ω/A Input Power


• AC input voltage: Selectable 115/230 VAC or 100–132/200–250 VAC


• AC input current: 10/20 A


• Frequency: 50/60 Hz or 47–63 Hz switchable


• Phase: Single phase


• Installation category: II


• Indoor use rated

Key Features

• Remote sensing for lead-loss compensation


• Overvoltage protection (OVP) and shutdown


• Parallel/series stacking for extended voltage or current capability


• Ten-turn potentiometers for fine voltage and current control


• Simultaneous dual-channel digital display

Typical Applications Component and subsystem development, burn-in testing, equipment characterization, and laboratory power distribution where stable, programmable DC output and high regulation accuracy are required.

Compatibility & Integration Remote programming interface enables integration into automated test systems and production environments. Flexible AC input selection accommodates global utility standards.