The TDK Lambda EMI TCR40S25 is a SCR phase-controlled DC power supply delivering 0–40 V and 0–25 A (1000 W) for industrial, commercial, and laboratory applications. It combines constant voltage/constant current regulation with advanced EMI filtering and soft-start circuitry to minimize inrush current and conducted RFI. Output ripple is 75 mV with load regulation better than 0.1% across 5–100% of rated current. The unit accepts 115 VAC (105–130 V) at 47–63 Hz as standard input, with optional 100 V, 200 V, and 208/220 VAC configurations available. Internal RFI filtering employing ferrite toroidal chokes and VDE-listed capacitors reduces line-conducted RFI by a factor of 1000 compared to earlier SCR designs, meeting VDE 875 Level N and VDE 871 Level A standards. Remote sensing and dual control modes (local or remote via resistance, voltage, or current) enable flexible system integration. Soft-start prevents magnetic inrush on power-on or recovery from interruption.
Technical Specifications
• Output Voltage: 0–40 V
• Output Current: 0–25 A
• Power Output: 1000 W
• Input Voltage (Standard): 115 VAC, 47–63 Hz (operating range 105–130 V)
• Output Ripple: 75 mV
• Load Regulation: <0.1% for output current variation from 5% to 100% of maximum rating (50–100% load)
• Overall Regulation: 0.1%
• Dielectric Withstand: 2500 Vrms (primary to secondary and chassis)
• Programming Sensitivity: Voltage 5000 Ω / 5 V / 1 mA full scale; Current 100 Ω / 100 mV / 1 mA full scale
– Key Features
• Constant voltage/constant current with automatic crossover
• Remote sensing terminals for load-point regulation
• Local or remote programming support
• Soft-start circuit eliminates SCR inrush current
• Internal RFI filter with ferrite toroidal chokes and VDE-listed capacitors
• 1000× reduction in line-conducted RFI versus previous SCR models
• VDE 875 Level N and VDE 871 Level A compliance
• Fan-cooled with horizontal air ducting
• 19" rack-mountable design
– Typical Applications
• Industrial power conditioning
• Commercial test and measurement
• Laboratory DC power systems
• Environments requiring stable, low-ripple output with minimal EMI signature
– Compatibility & Integration
Common programming interface with TDK-Lambda three-phase TCR models, EMHP, and HCR Series. Optional AC input voltages (100 V, 200 V, 208/220 V) available at additional cost.
