This paper describes the characterization of aluminum electrolytic capacitors specifically used in AC-DC power converter applications. It will be discussed why this capacitor technology is critical regarding lifetime and why it cannot be substituted simply by any another capacitor technology. Different aging effects of the capacitor will be discussed. Usage of the capacitor in different AC-DC converter topologies will be presented. Simulation circuits will be used to analyze the capacitor in more detail before suitable measurements will be performed to demonstrate a real example of a switching-mode power supply (SMPS).After the introduction into the aluminum electrolytic capacitor basics and theory, this paper will also present all important and possible measurements of capacitor parameters, like capacitance, equivalent series resistance (ESR) and ripple current. This includes in-circuit measurement which can be performed with an oscilloscope. An LCR-bridge is used to obtain high accuracy measurements in addition. A comparison between the two measurement methods will be presented. Furthermore, the required measurement hardware for the in-circuit measurements and the bridge measurement will be discussed and presented.Lastly, two different lifetime calculation methods are presented and a real example is used to compare the advantages and disadvantages of the different methods.Thanks to Mr. Frank Puhane from Würth eiSos GmbH & Co. KG who provided me with all aluminum electrolytic capacitor samples including the prepared capacitor with build-in temperature sensors to perform all measurements. Furthermore, his great expertise was very beneficial and helpful to create this premium application note.

07-Feb-2023 | AN-No. 1SL388

Measuring the power supply noise rejection (PSNR) requires accurate generation and leveling of artificial, sinusoidal disturbances and measurement of resulting phase-noise and jitter impairments.

30-Sep-2020

03-May-2023 | Press Releases | Test & measurement

At IPAC’23 in Venice, Italy, Rohde & Schwarz demonstrates solutions that meet high precision particle accelerator requirements, address challenges in elementary particle research, particle therapy applications, material characterization, precise beam forming and monitoring as well as safe storage.

Discover direct hit solutions from Rohde & Schwarz for embedded power efficiency testing applications.

RTO2000, signal flow diagrams, dialog boxes, crosslinks Signal flow diagrams in the dialog boxes visualize the signal processing, making it easier to configure measurements. Crosslinks take you directly to logically related settings. Forward/back buttons help you navigate quickly between dialog boxes. Semi-transparent dialog boxes are an elegant way of keeping everything in view.

In addition the RTO6 can be used to monitor the communication between the two automotive Ethernet devices and also check the frequency response and spectrum of the noise signal source coming from the SMW. 1000BASE-T1, Signal Quality Indicator (SQI) 1000BASE-T1 interoperability test

TC8 – OPEN Alliance - Flyer

Signal model based approach to joint jitter and noise decomposition - First published at DesignCon 2020 - White Paper

Terrestrial air navigation systems provide safety critical service seamlessly. Learn more about constant performance monitoring & measurements for organizations.

Verify and debug your PCI express protocols with PCIe test solutions by Rohde & Schwarz ► Get more information!

How to create your first remote control application

R&S VSE-K70x/FSx-K70x/FPx-K70x Vector Signal Analysis Application - Specifications

From designing a test setup to performing accurate measurements

This application note discusses important aspects of double-pulse test setups as well as how to perform accurate measurements. Double-Pulse testing is a standard test-method.

22-Mar-2021 | AN-No. GFM347

27-Oct-2021 | Press Releases | Test & measurement

Rohde & Schwarz is presenting its solutions live at productronica 2021, the leading global trade show for electronics development and production. The focus is on T&M equipment for latest technologies including automotive radar, satellite communications, Wi-Fi 7 and 5G. High throughput and low cost are essential in production environments, and Rohde & Schwarz solutions support exactly these goals. Trade show visitors will find the following Rohde & Schwarz highlights and more in hall A1, booth 375 at Messe München.

When measurement performance counts, choose Rohde & Schwarz test solutions for testing oscillators, clocks and PLLs for phase noise, jitter, wideband noise and spurs.

09-Nov-2022 | Press Releases | Test & measurement

Rohde & Schwarz showcases at electronica 2022 (booth A3.307) the new R&S MXO 4 oscilloscope plus a wide range of test and measurement solutions tailored to developers and test engineers.

Rohde & Schwarz oscilloscopes have won several awards since entering the scope market in 2010. Learn more about the individual distinctions here.

Increase your knowledge with our webinars on automotive EMC and full-vehicle antenna testing covering topics from CISPR-25 to a practical approach to testing communication systems over the air and EMI debugging.

Increasing demands on power distribution networks have resulted in smaller DC rails, as well as a proliferation of rails that ensure clean power reaches the pins of integrated circuits.

07-Mar-2017

R&S VSE-K106/FSx-K106/FPS-K106 EUTRA/LTE NB-IoT Measurement Application - Specifications

04-Oct-2018 | Press Releases | Test & measurement

Rohde & Schwarz and Spirent announce collaboration for TC8 Automotive Ethernet testing

Visit Rohde & Schwarz at the EMV 2025 in Cologne for all EMC test soltuions and much more.

Modul Performance verification with solutions from Rohde & Schwarz

Verify the energy efficiency of your O-RAN radio units

19-Mar-2024

Selecting your next oscilloscope: Why fast update rate matters | 选择下一代示波器: 为什么更高的波形捕获率很重要 - White Paper Brochures and Data Sheets White Paper

This document provides: - An explanation of analog versus digital triggering architectures - User advantages for oscilloscopes that have digital triggering - How to determine if an oscilloscope has a digital or analog trigger

This document provides: - An explanation of update rate - How users can quickly perform their own update rate characterization - How to compare vendor update rates - Benefits of fast update rate

本白皮书包含以下内容：- 模拟和数字触发架构 - 数字触发示波器的优势 - 如何辨别数字或模拟触发示波器

Measure the key performance criteria of your Sigfox device with comprehensive test solutions from Rohde & Schwarz. Read more to be ahead.

Measure the key performance criteria of your LoRa devices and gateways with best-in-class test solutions from Rohde & Schwarz. Read more to be ahead.