Benchtop DC Power Supplies Buying Guide

Selecting the right benchtop DC power supply depends on the output power, voltage and current range, channel count, and precision your application requires. Keysight offers four performance grades—Essential, Advanced, Expert, and Pro—each delivering a unique balance of power capability, noise performance, programmability, protection features, and measurement accuracy. This buying guide compares these grades to help you select the supply that best supports your teaching lab, design workflow, automated test setup, or high‑precision research environment.
 

Keysight’s benchtop DC power supplies lineup is structured into four main performance grades with varying core features:

• Essential benchtop DC power supplies come in one class. The NB1‑class Essential supply includes the EDU36311A. This triple‑output supply provides independent control, a 7‑inch color display, USB/LAN connectivity, and reliable regulation up to 90 W total power. Essential supplies are ideal for teaching environments and foundational electronics testing where usability, clarity, and dependable output are key.
  
  
• Advanced benchtop DC power supplies come in two classes. The NB1‑class includes the E36100 Series, and the NB2‑class includes the E36200 Series and E36441A. Advanced models support up to 400 W output power with enhanced autoranging capability, multiple outputs, integrated protections, and automation features. They provide flexible power delivery, independent outputs, and improved accuracy suited for everyday debugging, prototyping, and validation tasks across diverse electronic designs.
  
  
• Expert benchtop DC power supplies come in two classes. The NB1‑class includes the E36150 Series, and the NB2‑class includes the E36300 Series. Expert models expand capability to 800 W output power with advanced sequencing, LIST mode, arbitrary waveform programming, data logging, automotive ISO presets, and automation‑ready functionality. These supplies support higher power devices, multi‑channel automation, and detailed timing control essential for automotive ECU testing and complex digital system validation.
  
  
• Pro benchtop DC power supplies come in one class. The NB6‑class Pro supplies include the B2960 Series. Designed for high‑precision, ultra‑low‑noise applications, Pro models support sub‑microvolt and sub‑nanoamp resolution, fast 100 µs settling times, bipolar 4‑quadrant outputs, and a built‑in AWG with 512‑point capability. These supplies are engineered for cutting‑edge research, sensitive analog circuits, quantum systems, and mixed‑signal designs where clean power and precise control are mandatory.
   

Typical use cases further illustrate how each DC power supply grade supports different engineering needs:

• Essential DC power supplies support teaching labs, fundamental circuits, and basic prototyping. Their intuitive interface, triple independent outputs, and stable regulation make them ideal instructional instruments for powering microcontrollers, analog stages, and student lab setups. They simplify common tasks such as powering multiple circuits simultaneously, sequencing simple loads, and performing foundational electronics measurements with built‑in software support.
  
  
• Advanced DC power supplies support daily diagnostic and general‑purpose testing. Their higher output power, flexible autoranging channels, built‑in protection features, and automation capability allow engineers to test development boards, sensors, actuators, and mixed‑signal systems. They are ideal for power sequencing, current‑draw analysis, system bring‑up, and multi‑output designs requiring precise control and moderate power.
  
  
• Expert DC power supplies support high‑current and high‑power applications with fast sequencing and enhanced programmability. Features such as LIST mode, sequencing, simulation playback, and automotive preset libraries enable engineers to test ECUs, power modules, battery‑powered devices, and high‑current subsystems. Their multiple channels and automation support accelerate complex test routines in high‑throughput environments.
  
  
• Pro DC power supplies support high‑precision and ultra‑low‑noise applications such as quantum device testing, RF circuitry, optical component biasing, sensor characterization, and research‑grade mixed‑signal systems. With ultra‑low ripple (<10 µVrms), high sourcing resolution, bipolar outputs, and AWG functionality, Pro supplies deliver clean, stable, and programmable power for the most sensitive measurement environments.
   

Before finalizing a benchtop DC power supply purchase, it’s important to consider key selection factors:

• Output power: This defines the wattage the supply can deliver. Choose Essential for basic teaching and low‑power circuits up to 90 W, Advanced for general testing up to 400 W, Expert for higher‑power designs up to 800 W, and Pro for specialized precision applications at 32 W with ultra‑high accuracy.
  
  
• Voltage and current range: This determines your operating envelope. Essential, Advanced, and Pro support typical development‑board current requirements under 20 A, while Expert supports up to 80 A for automotive or high‑power testing.
  
  
• Remote sensing: This compensates for voltage drops across leads. Essential does not support it; Advanced and Expert support reliable remote sensing up to 800 W; Pro supplies offer precision 4‑wire sensing with 6.5‑digit resolution and <10 µVrms noise for sensitive loads.
  
  
• Programming and response time: This impacts settling behavior and dynamic test performance. Choose Essential or Advanced for steady signals, Expert for dynamic or transient load tests, and Pro for ultra‑fast 100 µs settling and precision transient simulation.
  
  
• Waveform generation: This allows shaping output waveforms or simulating transient events. Essential and Advanced do not support AWG features; Expert provides programmable steps and sequencing; Pro offers full AWG capability with 512 points for precision output shaping.
  
  
• Noise and ripple: This affects performance in sensitive designs. Essential and Advanced supplies suit non‑noise‑critical applications, Expert suits most low‑noise analog or RF work, and Pro offers the cleanest supply for high‑speed, precision, or quantum‑level testing.
   

Software extends the capability of benchtop DC power supplies with tools for remote control, data logging, sequencing, LIST mode programming, and automated test integration. Application software supports power‑up/down profiling, device characterization, and long‑duration monitoring, while accessories such as Kelvin probes, low‑noise filters, rack‑mount kits, cables, and interface modules help ensure accurate connections and measurement stability across diverse test setups.
 

Keysight Support Services can reduce your learning curve, enhance your uptime, ensure the accuracy of your testing equipment, and provide the expertise you require, precisely when and where you need it. KeysightCare curated support plans bundle critical services with prioritized response and turnaround times, and high‑performance instruments include one year of KeysightCare Assured to maintain confidence in ongoing measurement performance.