EEWorld Online

EEWorld Online serves as a valuable resource hub for design engineers, featuring dynamic user forums, the latest industry news, essential engineering tools, curated editorial content, part and data sheet searches, and a variety of electronic projects. The EEWorld Online network includes several websites such as eeworldonline.com, analogictips.com, connetortips.com, EDAboard.com, Electro-Tech-Online.com, EngineersGarage.com, DesignFast.com, microcontrollertips.com, powerelectronictips.com, sensortips.com, and testandmeasurementtips.com. These platforms showcase insights from industry professionals, offering product news, teardowns, engaging EE videos, practical "how-to" articles, and best practices in electronics design alongside comprehensive electronic datasheet resources. Committed to keeping pace with the latest developments, EEWorld Online aims to deliver the most relevant information to electronics design engineers who are shaping innovations for today and tomorrow.

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Articles

What is the math of negative feedback and how is it used to ensure stability?

4 days ago | eeworldonline.com | Jeff Shepard

Negative feedback can create a control system where the output of a process is used to counteract any deviations from a desired set point, effectively “correcting” the system, bringing it back to equilibrium, and maintaining stable operation. It’s used in a variety of applications, including voltage regulation, temperature controllers, audio amplifiers, and operational amplifiers.
Swapfest Highlights: Oscilloscopes and More

5 days ago | eeworldonline.com | Martin Rowe

The May 2025 gathering of the monthly electronics “Flea at MIT” swapfest featured an excessive number of test instruments. We break them down into oscilloscopes, meters, and signal sources. Click on any image to enlarge in a new tab. A Tektronix analog modular oscilloscope. The black bezel hides the model number. This unit has a 3A74 four-channel input module and a 3A75 amplifier. Can you tell what model oscilloscope this is? If so, leave a comment. Hitachi V-252, a 20 MHz analog oscilloscope.
Gate drivers — the critical link in power-device performance: part 3

1 week ago | eeworldonline.com | Bill Schweber

This section will discuss some of the many subtleties of the gate driver and its power source. Gate-driver dc-dc converters have other unique issues. Among them are:1) Regulation: the load on the dc-dc converter is close to zero when the device is not switching. However, most conventional converters require a minimum load at all times; otherwise, their output voltage can increase dramatically, potentially reaching the gate breakdown level.
6G Innovations Beyond 5G: What's Next?

1 week ago | eeworldonline.com | Martin Rowe

From radios to core networks, a consensus is forming that 6G needs to offer more focused technology than 5G, or is it more technology? Energy, spectrum, and AI top the list of what 6G needs. EE World spoke with four engineers who attended the March 3GPP meeting in Korea. Here’s what they had to say. If you ask people, “Has 5G been successful?” you get different answers depending on who you ask.
Gate drivers — the critical link in power-device performance: part 2

1 week ago | eeworldonline.com | Bill Schweber

Thus far, we have examined the general issue of power devices and their characteristics. This part goes into the details of the power-device gate driver. To drive current into the gate, the positive rail’s voltage should be high enough to ensure full saturation/enhancement of the power switch, but without exceeding the absolute maximum voltage for its gate.
Butler Matrix drives Wi-Fi and other phased-array antennas

1 week ago | eeworldonline.com | Martin Rowe

This passive device lets you steer signal beams for over-the-air wireless test systems. Vaunix Technology, a manufacturer of modular RF/wireless test equipment, has introduced the LBM-7250-4 Lab Brick Butler Matrix, a beamforming tool that works with phased-array antennas to steer beams between transmitters and receivers. The Butler Matrix has four passive inputs and four outputs and can be used for testing both transmitters and receivers.
Compact SMD fuse operates from -55°C to +125°C in robotic environments

1 week ago | eeworldonline.com | Aimee Kalnoskas

As humanoid robotics evolve into increasingly advanced, agile, and autonomous systems, the demand for compact, high-performance components continues to grow. SCHURTER addresses this need with its UHP high-current SMD fuse, designed for protecting the complex battery systems and power electronics at the heart of humanoid robots.
Gate drivers — the critical link in power-device performance: part 1

1 week ago | eeworldonline.com | Bill Schweber

Effective MOSFET/IGBT-device switching depends on the gate driver and its power supply. From power supplies and motor drives to charging stations and myriad other applications, switching power semiconductors such as silicon (Si), silicon carbide (SiC), and gallium nitride (GaN) MOSFETs, as well as insulated-gate bipolar transistors (IGBTs), are the key to efficient power-system designs. However, to achieve maximum performance from the power device, an appropriate gate driver is needed.
How to select automotive PCB-to-wire harness connectors

1 week ago | eeworldonline.com | Aharon Etengoff

An automotive wiring harness routes electrical power and signals between various vehicle components. Within this system, PCB-to-wire harness interfaces use connectors to link discrete wiring bundles with board-mounted electronics. This article examines the fundamentals of PCB-to-wire harness interfaces and outlines the electrical performance requirements for connectors across various vehicle platforms.
What are the important standards for compliance with wire harness-to-PCB interfaces that engineers should know?

2 weeks ago | eeworldonline.com | Rakesh Kumar

When connecting cable assemblies to PCBs, you need more than just a physical connection. These interfaces must meet specific industry standards to deliver minimal performance across different applications. Understanding the right standards for your project is necessary when applying to both consumer electronics and aerospace systems. This FAQ discusses the most common standards for the wire harness-to-PCB interface. Q: What is the IPC/WHMA-A-620 standard, and how do its classes affect connections?