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
Output Ratings
• 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.
