Sorensen DCR300-3B

The Sorensen DCR300-3B is a 1000 W DC power supply for bench or rack installation, delivering precisely regulated output from 0–300 Vdc at 0–3 Adc. Built on phase-controlled SCR/Triac topology with passive LC filtering, it combines fast transient response with dual-mode operation—automatically crossovering between constant voltage and constant current to protect loads during fault conditions. Line and load regulation reaches 0.05% typical, while current stability holds to 0.15% of Imax over 8 hours post warm-up. Ripple and noise measure 700 mV RMS typical; transient response for 50% load step is 50 ms typical.

– Technical Specifications

• Output: 0–300 Vdc, 0–3 Adc at 1000 W
• Input: 115 Vac single phase, 50/60 Hz standard; 208/220/230 Vac single phase optional on selected convection-cooled models
• Voltage Regulation: 0.05% line and load combined (typical); 0.05% or 75 mV whichever is greater for 0–150 to 0–600 Vdc models
• Current Regulation: 0.15% of Imax stability, 8-hour hold after 30-minute warm-up (typical)
• Ripple & Noise: 700 mV RMS typical
• Transient Response: 50 ms for 50% load change (typical)
• Temperature Coefficient: 0.015%/°C (voltage mode), 0.03%/°C (current mode)
• Voltage Stability: 0.1% of Emax, 8-hour hold post warm-up
• Dimensions: 5.25 in. height (133 mm)
• Weight: 70 lbs (31.7 kg)

– Key Features

• Autocrossover between CV and CC modes with panel indicators
• Low-level remote sensing; maximum lead drop 5% of Emax or 3 V, whichever is smaller
• Adjustable current limiting with automatic recovery on overload or short circuit
• Overvoltage crowbar protection standard
• Analog voltage and current metering
• Direct and Master-Slave paralleling; series operation supported
• Remote programming of voltage and current

– Typical Applications

Electronic testing, component characterization, and development work requiring stable, adjustable high-voltage supply with rapid transient settling.

– Compatibility & Integration

Supports multi-unit paralleling and series configurations for extended voltage or current. Instruction manual (67 pages) and service manual for DCR300-3B2 models (36 pages) available.