Sorensen DCR40-25B

The Sorensen DCR40-25B is a 1000-watt programmable DC power supply engineered for laboratory, industrial, and automated test equipment (ATE) applications. It delivers continuously adjustable output from 0 to 40 VDC at 0 to 25 ADC (at 40°C), with SCR-controlled regulation for high efficiency and precise voltage/current control via automatic crossover. The unit supports remote programming in both voltage and current modes, adjustable current limiting with automatic recovery, and standard overvoltage protection with no overshoot at turn-on, turn-off, or power failure.

– Technical Specifications

Output Performance:
• Voltage: 0–40 VDC with 0.05% or 10 mV line/load regulation (typical 12 mV)
• Current: 0–25 ADC at 40°C; derated to 19.3 ADC at 50°C and 13 ADC at 70°C
• Power: 1000 W maximum
• Voltage ripple (PARD): 90 mV RMS; noise (P-P): 270 mVp-p
• Current ripple (PARD): 56 mA RMS
• Transient response: 50 ms typical (50–100% load step)
• Stability (8 hours post warm-up): ±0.1% E voltage, ±0.15% I current
• Temperature drift: 0.015%/°C voltage, 0.03%/°C current

Input & Power:
• Input voltage: 103–127 VAC single phase, 47–63 Hz
• Input current: 16 A
• Power factor: 0.68
• Efficiency: 79%

Programming Interface:
• Voltage mode: 300 Ω/V
• Current mode: 16 Ω/A
• Remote sensing: maximum 5% of output voltage or 3 V per lead, whichever is smaller
• Remote shutdown via relay, transistor, or logic switching

– Key Features

• Automatic voltage/current crossover with mode indicators
• Adjustable current limiting and automatic recovery
• Overvoltage protection standard
• Direct and Master/Slave paralleling (up to four units)
• Series operation capability
• 19″ rack-mountable housing
• Convection or fan-cooled thermal management

– Typical Applications

ATE systems, component burn-in, device characterization, laboratory research, industrial production testing, and load-transient evaluation.

– Compatibility & Integration

Supports remote voltage and current mode programming. Compatible with systems requiring Master/Slave multi-unit configurations or series-connected supplies.