Lambda / TDK / EMI TCR150

The TCR150 is an SCR phase-controlled regulated DC power supply engineered for industrial and electronic applications requiring stable, precise power delivery. It operates in constant voltage or constant current mode with automatic crossover, accommodating varying load conditions from 50% to 100% of rated output. The TCR150 combines low output ripple, excellent regulation accuracy, and comprehensive control flexibility with local or remote programming capability.

Technical Specifications

• Output voltage ripple: 80 mV worst-case across all resistive loads


• Regulation (CV/CC): ±0.1% variation (50–100% output), ±0.05% variation below 50% output


• Transient response: 30% load step recovers within 2% of final value in 75 ms


• Long-term stability: ±0.05% of set point over 8 hours after warm-up (fixed line, load, temperature)


• Voltage temperature coefficient: 0.02%/°C of maximum rated output voltage


• Current temperature coefficient: 0.03%/°C of maximum rated output current Input Power


• 1800 W models: 115 VAC standard (105–130 V operating range), 47–63 Hz, 28 A maximum current draw


• 2800 W models: 208/220 VAC standard (190–253 V), 22 A maximum current draw


• Optional inputs available: 100 V, 200 V, 208/220 VAC for 600 W, 1000 W, and 1800 W configurations


• Soft-start circuit eliminates AC inrush current EMI and Dielectric


• Line-conducted RFI: Complies with VDE 875 Level N and VDE 871 Level A (1000× reduction over previous SCR designs)


• Dielectric withstand: 2500 V rms primary to secondary and chassis

Key Features

• 10-turn voltage control and one-turn current control for fine output adjustment


• Analog or optional digital panel meters for voltage and current indication


• Local or remote programming with selectable sensitivity:

Voltage: 5000 Ω, 5 V, or 1 mA for full-scale output

Current: 100 Ω, 100 mV, or 1 mA for full-scale output

• UL-rated AC input circuit breaker with manual turn-on/off

Typical Applications Industrial test systems, sensitive electronic equipment powering, battery charging, and laboratory environments where precise regulation and low ripple are critical.

Compatibility & Integration Remote programming interfaces support both voltage and current control via analog inputs. Dual output metering (voltage and current) enables closed-loop monitoring in automated test and production systems.