The Lambda/TDK EMI LQ-520 is a regulated DC power supply for bench and rack-mount laboratory and test equipment applications. This convection-cooled unit delivers precise voltage and current regulation with exceptional ripple performance, meeting EMC standards without requiring external cooling. Front-panel metering, dual voltage adjustment controls, and remote sensing capability make it suitable for demanding ATE and industrial test environments requiring stability and low noise output.
– Technical Specifications
Input & Output
• Input voltage: 105–132 VAC standard (47–440 Hz); Options V (187–242 VAC) and V1 (205–265 VAC) available
• Output regulation (line): ±0.005% + 0.5 mV across specified input range
• Output regulation (load): ±0.005% + 0.5 mV from 0 to full load
• Voltage adjustment: 1% to maximum output via internal potentiometers; coarse and fine front-panel controls
• Current limiting: Adjustable from zero to Imax with constant current crossover at 1% Iout
• Ripple and noise (20 MHz BW): 1 mV pk-pk, 150 µV RMS
• Temperature coefficient: ±(0.005% Vo + 10 µV)/°C
Mechanical & Thermal
• Dimensions: 5-3/16″ H × 4-3/16″ W × 15-1/2″ D
• Weight: 14 lbs net, 18 lbs shipping
• Operating temperature: 0°C to 60°C continuous (derating above 30°C)
• Storage temperature: -55°C to +85°C
• Cooling: Convection; no fans required
Protection & Interfaces
• Thermal protection: Self-resetting thermostat
• Electrical protection: Adjustable current limiting and primary/secondary fuses
• Input connections: Rear barrier strip
• Output connections: Five-way front-panel binding posts
• Remote sensing provided to eliminate lead resistance effects
– Key Features
• Digital metering with METER SELECTION switch for voltage or current monitoring
• Front-panel power on-off switch and single-turn current adjustment
• Compact convection-cooled design for noise-sensitive applications
• Dual-range input voltage options accommodate international standards
• Output derating: 10% at 50 Hz
– Typical Applications
Laboratory power systems, automated test equipment (ATE), industrial bench testing, and bench-top instrumentation requiring high regulation accuracy and low output noise.
