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將直流電源供應器與應用比對

直流電源供應器可用於廣泛的應用,範圍涵蓋從訓練新一代電子工程師到開發突破性的超低功率穿戴式產品。無論您要將可程式化的直流電源供應器用於提供電源,或是透過其提供數千伏特來突破效能極限,選擇適合的可變工作台電源供應器,便是在教學、研究、設計和製造各方面獲得成功測試結果的關鍵。

安排展示

 

如何選擇最佳的直流電源供應器

最常見的選擇條件是:

  • 輸出通道數 (單一輸出或多輸出)
  • 輸出電壓、電流和功率
  • 設定解析度和準確度
  • 漣波和雜訊
  • 功能和可程式化能力
  • 具備進階功能,例如具有奈米安培解析度的電流量測、定序、類比輸入、數位 I/O 和程式設計功能
EA-PSI 10000 Switching Power Supply

EA-PSI 10000 Series: Precise, High-Performance

Delivering precise, adjustable power with high efficiency and autoranging capabilities, the EA-PSI 10000 Series is built for R&D, production, and test automation.

  • Stable, Programmable DC Power – Precise voltage and current control
  • Autoranging Flexibility – Maximizes power delivery across voltage levels
  • High Efficiency – Reduces energy waste and heat output
  • Remote Programmability – Ethernet, USB, and CAN for automated testing

Explore the Product

Keithley 直流電源供應器

Battery Testing & Simulation

 

High-Power & Specialized Applications

 

How Engineers Use DC Power Supplies

Circuit board for analog and RF circuits requiring precision testing

Circuit Design and Prototyping

Engineers rely on DC power supplies to provide stable, adjustable voltage during circuit design, allowing for component validation, performance tuning, and troubleshooting in early-stage development.

Production Testing and Quality Assurance

In manufacturing environments, DC power supplies help test PCBs, power electronics, and semiconductors, ensuring each product meets performance and safety standards before deployment.

Engineer performing research using Keithley test equipment
Automation testing expert viewing three screens and writing test scripts

Automated Test and Measurement Systems

With programmable control and remote operation, DC power supplies integrate into automated test setups, enabling fast, repeatable measurements across multiple devices and conditions.

DC POWER SUPPLY MEASUREMENT TIPS

The 10 Stages of Design

Designing a reliable power supply requires careful planning, precise testing, and the right tools. Our Power Supply Measurement Tips guide walks you through the 10 essential stages of power supply design—from component selection to EMI troubleshooting and final validation. Whether you're optimizing efficiency, ensuring compliance, or troubleshooting issues, these expert insights will help you achieve better performance and faster time to market. And if you're selecting a new power supply, these tips will guide you in making the right choice. Because the best power supply isn’t just about specs—it’s about how you test and refine your design.


  View & Download the Guide

How to Choose the Right DC Power Supply

Selecting a DC power supply can be overwhelming with the range of options available, but breaking it down by application and essential features makes the decision much easier. Here’s what to consider when choosing the right power supply for your needs.

Step 1: Define Your Application

Before looking at specifications, start with the intended use case.

Step 2: Key Selection Criteria

Single vs. Multi-Output

Voltage, Current, and Power Capacity

Precision and Stability

Programmability and Automation

Step 3: Specialized Features for Specific Applications

Step 4: Consider Long-Term Usability

Selecting a power supply is not just about meeting immediate requirements—it’s about ensuring flexibility and longevity.

資源

PwrSupGroup
技術簡介

直流電源供應器技術資訊

直流電源供應器是測試和設計的基礎工具,可提供穩壓直流電輸出,為任何元件、模組或設備供電。此簡介將探索什麼是直流電源供應器及其運作方式。

tek pws
應用摘要

交流-直流電源供應器的電源量測

交流電轉直流電源供應器已完全融入我們的日常生活。瞭解更多有關交流電-直流電源供應器的用途,及其如何成為我們所有電子產品的核心。

5 Series B Double Pulse v1 995
產生選擇器指南

選擇指南 - 一般用途工作台電源供應器、特殊用途電源供應器和電子負載

為您的應用選擇最合適的工作台直流電源供應器。Tektronix 和 Keithley 提供完整的工作台電源供應器產品組合,以滿足您的電源需求。

FAQs for DC Power Supplies

What is a DC Power Supply?

A DC power supply converts AC power from the mains into a stable DC output. It can be regulated (to maintain a constant voltage) or unregulated, depending on the application.

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What’s the difference between a DC power supply and an AC power supply?

A DC power supply delivers direct current (DC) output, providing a steady voltage for testing and powering electronic devices, circuit boards, and components. An AC power supply, on the other hand, provides alternating current (AC) output, which simulates power from an electrical grid or generator. AC power supplies are typically used to test products that will operate on mains power, such as household appliances and industrial equipment.

What industries use DC power supplies?

DC power supplies are widely used across various industries, including:

  • Electronics & Semiconductor Testing – Used for circuit validation, component characterization, and failure analysis.
  • Automotive & Electric Vehicles (EVs) – Essential for battery testing, powertrain validation, and inverters.
  • Aerospace & Defense – Used for high-precision testing of avionics, radar, and satellite systems.
  • Medical Devices – Supports the development and testing of implantable and portable medical electronics.
  • Renewable Energy – Critical for testing solar panels, fuel cells, and energy storage systems.

Can a DC power supply simulate a battery?

Yes, some programmable DC power supplies are designed to function as battery simulators. These power supplies allow engineers to replicate battery behavior by setting parameters such as internal resistance, voltage sag, and discharge characteristics. This is especially useful for testing battery-operated devices under various charge and discharge conditions without requiring an actual battery, ensuring accurate and repeatable test results.

What are Switching Power Supplies?

Switching power supplies use high-frequency switching regulators to convert AC or DC power efficiently. They are lighter, more compact, and energy-efficient compared to linear power supplies but may introduce electrical noise.

What is a Bench Power Supply?

A bench power supply is a compact, standalone power source used in laboratories, workbenches, and test setups. It typically provides adjustable voltage and current, allowing precise power delivery for electronic circuit testing.

What is a Bidirectional Power Supply?

A bidirectional power supply can both source and sink power, meaning it can supply power to a device under test (DUT) and also absorb power from it. This is particularly useful in applications like battery testing, regenerative energy systems, and electric vehicle (EV) powertrain development.

What is a Linear Power Supply?

A linear power supply converts AC voltage to a lower DC voltage using a transformer and then regulates it using linear regulators. It provides stable, low-noise output but is less efficient due to heat dissipation.

What is a Programmable DC Power Supply?

A programmable dc power supply allows users to set and control voltage, current, and other parameters remotely via software or interfaces like USB, GPIB, or Ethernet, making it ideal for automated testing applications.

What is a Variable Power Supply?

A variable power supply lets users adjust the output voltage and/or current within a specified range, making it useful for applications requiring different power levels during testing or prototyping.

What is an ATE Power Supply?

An ATE (Automated Test Equipment) power supply is designed for integration into automated testing systems, providing precise and repeatable power delivery for electronics manufacturing and validation.

What is an Autoranging Power Supply?

An autoranging power supply automatically adjusts its voltage and current output within a defined power limit, allowing a wider operating range compared to fixed-range power supplies. This flexibility makes it ideal for applications that require varying voltage and current levels without needing multiple power supplies.

How do autoranging DC power supplies improve testing?

Autoranging DC power supplies automatically adjust their voltage and current output to provide full power across a wider operating range. This eliminates the need for multiple fixed-range power supplies, allowing a single unit to accommodate different test conditions without requiring manual range selection. This feature is particularly useful for applications where varying voltage and current loads are needed, such as in battery testing, motor control, and power semiconductor evaluation.

Why is ripple and noise important in a DC power supply?

Ripple and noise refer to unwanted fluctuations in the output voltage of a DC power supply. Low ripple and noise are crucial in applications that require clean and stable power, such as precision analog circuits, RF testing, and medical instrumentation. Excessive noise can interfere with sensitive components, leading to inaccurate test results, degraded signal quality, or erratic device behavior. Selecting a power supply with low ripple and noise ensures more reliable performance in critical applications. Would you like to integrate these into the existing FAQ structure, or should I reformat the entire section for clarity and consistency?