The Lambda/TDK LK345A is a regulated DC power supply engineered for applications demanding stable, reliable power delivery. This metered model (FM suffix) combines constant voltage and constant current operation with automatic crossover, delivering voltage regulation of 0.015% or 1 mV (whichever is greater) across line and load variations. Front-panel coarse and fine controls govern both voltage and current adjustment, while integrated DC voltmeter and ammeter provide real-time output monitoring. The convection-cooled design eliminates blower requirements and eliminates overshoot on power transitions—hallmark characteristics of the LK series.
Technical Specifications
DC Output
• Voltage Regulation (Line/Load): 0.015% or 1 mV (whichever is greater) for input variations of 105–132 VAC or load changes from no load to full load
• Constant Current Regulation (Line/Load): 0.015% or 1 mV (whichever is greater)
• Ripple and Noise: 500 µV RMS (either polarity grounded)
• Remote Sensing: Available to compensate for power output lead resistance
• Output Meters: DC voltmeter and DC ammeter
AC Input
• Voltage: 105–132 VAC at 47–63 Hz
• Derating: 10% current reduction at 50 Hz operation
Protection & Control
• Electronic current limiting: Adjustable, settable to 105% of rated current
• Overload protection: Automatic electronic circuit limiting
• Internal protection: Fuse
• Connections: Rear-mounted terminal block
Physical
• Cooling: Convection (no blower)
• Finish: Brushed aluminum with clear anodized panels, grey inlay
• Dimensions (LK345A-FM): 5-3/16″ × 8-3/8″ × 16″
• Weight: 31.5 lbs
Environmental
• Storage Temperature: −55°C to +85°C
– Key Features
• Dual CV/CC operation with automatic crossover
• Low noise: 500 µV RMS ripple and noise specification
• Precision regulation across full line and load ranges
• Convection cooling for passive, reliable operation
• Front-panel metering (voltmeter/ammeter) for real-time verification
• Adjustable electronic current limiting to 105% rated capacity
– Typical Applications
Laboratory power, industrial test stands, prototype development, and field equipment requiring stable regulated DC with integrated metering and overload protection.
– Compatibility & Integration
Rack mounting supported via LRA series adapters (LRA-1, LRA-2 available for LK-340 series). Over-voltage protection modules (LHOV-4, LHOV-5, LHOV-6) and accessory panels available.
