Keysight (Agilent) EL33133AE DC Electronic Load, Single-Input: 150V, 40A, 250W

The Keysight EL33133AE is a single-input, 250 W DC electronic load for power source characterization and validation. Operating from 0 V to 150 V and 0 A to 40 A, it serves design verification across consumer power supplies, batteries, battery modules, solar panels, LED drivers, power converters, and wide-bandgap semiconductor devices. The instrument features four operating modes—constant current, constant voltage, constant resistance, and constant power—enabling flexible load simulation across diverse test scenarios.

The 4.3-inch color LCD display provides real-time monitoring alongside integrated voltmeter and ammeter functions, eliminating external measurement dependencies. Remote sense technology (2-wire and 4-wire) compensates for lead voltage drops, while the data logger captures voltage, current, and energy continuously at adjustable sample rates from 20 microseconds to 60 seconds, with storage to internal non-volatile RAM or USB memory in CSV format.

Scope view functionality digitizes voltage and current waveforms for transient analysis without external probes or shunts. Dynamic load profiles support list modes (continuous, pulse, toggle) with programmable slew rates for step transient testing.

– Technical Specifications

• Input Power Rating: 250 W
• Operating Voltage: 0 V to 150 V
• Operating Current: 0 A to 40 A
• Display: 4.3-inch color LCD
• Dimensions (H × W × D): 144.85 mm × 215.90 mm × 457.60 mm
• Weight: 6.50 kg
• Mounting: Bench Top

– Key Features

• Constant Current, Constant Voltage, Constant Resistance, and Constant Power modes
• Integrated voltmeter and ammeter with simultaneous measurement
• Built-in 2-wire and 4-wire remote sense capability
• Data logger with adjustable sample rate (20 µs to 60 s)
• Scope view for transient waveform analysis
• Dynamic load profiles with programmable slew rates
• SCPI programmability via USB and LAN interfaces
• Constant current programming accuracy (40 A): ±(0.05% of output + 7.2 mA)

– Typical Applications

• Power supply design verification
• Battery and battery module testing
• Solar panel characterization
• LED driver validation
• Power converter analysis
• Wide-bandgap semiconductor device characterization (MOSFETs, IGBTs)

– Compatibility & Integration

• SCPI programmable interface
• USB and LAN connectivity
• Optional GPIB interface (model-dependent)
• Remote operation via Keysight Pathwave BenchVue software or web interface