Agilent/Keysight EL34143A

The Keysight EL34143A is a 350 W benchtop DC electronic load for single-input testing of power sources up to 150 V and 60 A. Operating in Constant Voltage, Constant Current, Constant Resistance, and Constant Power modes, it delivers programmable slew rate control and built-in measurement capabilities for design verification across consumer power supplies, batteries, solar panels, LED drivers, and power converters.

– Technical Specifications

Power and Electrical Ratings
• Maximum power: 350 W
• Voltage range: 0–150 V
• Current range: 0–60 A
• Current programming accuracy: 0.04% + 130 μA (0.6 A range), 0.04% + 2 mA (6 A range), 0.04% + 12 mA (60 A range)
• Current readback accuracy: 0.04% + 120 μA (0.6 A range), 0.04% + 1.8 mA (6 A range), 0.04% + 9.6 mA (60 A range)

Operating Modes
• Constant Voltage (CV), Constant Current (CC), Constant Resistance (CR), Constant Power (CP)
• Programmable slew rate for voltage and current rise/fall control

– Key Features

Integrated Measurement
Built-in voltmeter and ammeter eliminate external shunts and improve measurement accuracy. The 4.3-inch color LCD display provides direct readout of voltage and current.

Transient Analysis and Logging
The scope function digitizes voltage and current at 200 kHz with up to 256k samples for transient response testing. A data logger captures voltage, current, and energy with adjustable sampling from 20 μs to 60 s, storing up to 10,000 hours or 5 MB of data to internal non-volatile RAM or external USB media in CSV format.

Advanced Testing Capabilities
List function generates continuous, pulse, or toggle load profiles for dynamic testing. Battery test mode optimizes precision voltage and capacity control. Remote sense technology (2-wire and 4-wire) supports accurate testing of remote power sources.

– Typical Applications

• Power supply design verification and characterization
• Battery capacity and discharge profile testing
• Solar panel I-V curve analysis
• LED driver validation
• Power converter efficiency measurement and transient response

– Compatibility & Integration

USB and LAN (LXI Core) interfaces are standard. Optional user-installable GPIB module available. Full SCPI programmability via all interfaces. Compact benchtop form factor: 144.85 mm H × 215.90 mm W × 476.01 mm D, weighing 14.33 lbs.