Sorensen DCR20

The Sorensen DCR20-25B is a programmable DC power supply engineered for laboratory, research, development, and production environments demanding precise voltage and current delivery. Built on SCR-controlled regulator topology, this 500 W unit operates from single-phase 115 VAC (50/60 Hz) with optional 208/220/230 VAC inputs, delivering 0-20 VDC at 0-25 A with exceptional line and load regulation of 0.05% or 10 mV, whichever is greater.

– Technical Specifications

• Output: 0-20 VDC, 0-25 A, 500 W maximum
• Line and Load Regulation: 0.05% or 10 mV (whichever is greater)
• Ripple and Noise: 65 mVrms
• Current Mode Stability: 0.15% of Imax over 8 hours following 30-minute warm-up
• Transient Response: 50 ms for 50% load change (typical)
• Input: 115 VAC single phase standard; 50/60 Hz operation without derating; optional 208/220/230 VAC available

– Key Features

• Automatic crossover between constant voltage (CV) and constant current (CC) modes with panel indicators for mode status
• Remote voltage and resistance programming for both CV and CC operation
• Adjustable current limiting with automatic recovery for overload and short-circuit protection
• Overvoltage protection via standard crowbar circuit
• Low-level remote sensing capability
• Dual analog meters for voltage and amperage monitoring
• Direct and Master/Slave paralleling configurations supported
• Direct series connections and Master/Slave series operation capability

– Typical Applications

Laboratory power delivery, component testing, production burn-in, equipment characterization, and automated test systems requiring stable, programmable DC sources with integrated protection.

– Compatibility & Integration

Bench or rack-mountable configuration supports flexible laboratory integration with remote programming interfaces for closed-loop and automated testing setups.