The Sorensen SRL40-25 is a 1000 W DC power supply delivering 0–40 Vdc and 0–25 Adc with three independent regulation modes: Constant Voltage, Constant Current, and Constant Power with automatic crossover. Designed for laboratory, industrial testing, and electronic development environments, it combines SCR pre-regulation with linear series-pass topology for high efficiency. The unit features exceptional voltage regulation (0.01% of setting or 2 mV, whichever is greater) and stable current regulation across line and load variations. Transient response of 150 µs for 100% change and zero overshoot at turn-on, turn-off, and power failure ensure signal integrity in precision applications. Remote programming, remote sensing, and configurable overvoltage protection are standard. Series operation extends to 200 Vdc; parallel configurations support up to three units in master-slave mode. Bench or rack mounting with front-mounted binding posts rated for 25 A output. Fan-cooled design operates from 105–125 Vac, 47–53 Hz or 57–63 Hz input.
Technical Specifications
• Output Voltage: 0–40 Vdc
• Output Current: 0–25 Adc
• Power Output: 1000 W
• Voltage Regulation (Line and Load): 0.01% of setting or 2 mV, whichever is greater
• Current Regulation (Line and Load): 0.2% of setting + 4 mA
• Transient Response: 150 µs (100% change, typical)
• Overshoot: None at turn-on, turn-off, or power failure
• Input Voltage: 105–125 Vac
• Input Frequency: 47–53 Hz / 57–63 Hz
• Input Current: 22.0 Aac (maximum)
• Dimensions: 17″ W × 5.25″ H × 20″ L
• Cooling: Fan-cooled
– Key Features
• Three regulation modes with automatic crossover
• Remote voltage and resistance programming
• Remote sensing capability
• Adjustable overvoltage protection (front-panel set without load removal)
• Analog front-panel metering (volts and amperes)
• Built-in overvoltage, overcurrent, and overheating protection
• Series operation to 200 Vdc maximum
• Master-slave and straight parallel configurations
• Circuit breaker protection
– Typical Applications
• Laboratory power distribution
• Industrial equipment testing and validation
• Electronic circuit development and characterization
• Precision load simulation and evaluation
– Compatibility & Integration
Supports series stacking to 200 Vdc and parallel operation (up to three units in master-slave configuration). Mode selector terminal board enables programming, remote sensing, and parallel operation setup. Accepts standard 105–125 Vac single-phase input.
