The Lambda / TDK / EMI EMS150 is a switch-mode AC-to-DC power supply engineered for industrial, laboratory test, and embedded applications requiring high efficiency and precise regulation. The EMS150 series delivers output voltages up to 150 VDC with configurable current ratings and power levels from 600 W to 5 kW, supported by constant voltage/constant current operation with automatic crossover. Built-in active power factor correction achieves 0.99 at full load on single-phase inputs, while line and load regulation both stay below 0.1% of maximum output voltage across a full 100% load change.
## Technical Specifications
**Input Power**
• Single-phase: 105–125 VAC or 190–253 VAC; universal input 85–265 VAC available
• Three-phase: 190–250 VAC or 360–440 VAC (higher power models)
• Frequency: 47–63 Hz
**Output**
• Voltage: Up to 150 VDC (EMS150 series)
• Current: 7 A to 600 A depending on model
• Power: 600 W, 1 kW, 2 kW, 2.5 kW, 3.3 kW, 5 kW
• Efficiency: 70–87% typical (varies by output current)
• Ripple and noise: ~30% P-P carrier ripple standard; reduced ripple option (40 mV P-P) available for models up to 40 VDC
**Regulation**
• Line regulation: < 0.1% of maximum output voltage (100% load change)
• Load regulation: < 0.1% of maximum output voltage (100% load change)
## Key Features
• Constant voltage / constant current topology with automatic crossover
• Active power factor correction (0.99 at full load, single-phase)
• Fully programmable analog interface (0–10 V or 0–5 V signals)
• Optional digital control via RS232/RS485 (SCPI compliant) and IEEE 488 GPIB
• Four-digit LED displays for voltage and current readout
• Front panel encoder controls with selectable fine (~6 turns) or coarse (~30 turns) adjustment
• Front panel lockout and output-off preview functionality
• Compact, rack-mountable form factor
## Typical Applications
Industrial test and burn-in, semiconductor processing, laboratory power sourcing, medical equipment, scientific research, and embedded system power conditioning.
## Compatibility & Integration
Programs via analog signals or optional digital interfaces (RS232/RS485 SCPI, IEEE 488 GPIB). Supports remote control and monitoring through multiple interface options for system integration.
