Jeff Shepard

California

Technology Analyst, Commentator and Writer at Freelance

Contributing Writer at EEWorld Online

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Articles

What’s the relationship between Ohm’s Law and quantum mechanics?

1 week ago | eeworldonline.com | Jeff Shepard

Ohm’s Law is the classical physics explanation of the linear relationship between voltage, current, and resistance in a conductor. Quantum mechanics provides insights into the mechanisms behind this behavior, explaining why Ohm’s Law still holds true even on very small scales where quantum effects are significant. Ohm’s law is a macroscopic view of classical physical relationships.
How are single photon sensors used in quantum computing?

1 week ago | eeworldonline.com | Jeff Shepard

Single-photon sensors, also known as single-photon detectors (SPDs), enable the precise detection and manipulation of individual photons, which can serve as quantum information carriers, or qubits, in photonic quantum computers (PQCs). PQCs are a type of measurement-based quantum computing (MBQC) that promises highly scalable systems and operates at room temperature.
What are the foundations of Maxwell’s equations and how do they relate to TENGs?

1 week ago | powerelectronictips.com | Jeff Shepard

Gauss’s law for electricity, Gauss’s law for magnetism, Faraday’s law of induction, and Ampère’s circuital law are the foundations of Maxwell’s equations. But Maxwell saw what wasn’t there. He added a term to one of the equations, providing a single mathematical model for electric, optical, and radio technologies and changing scientists’ understanding of the world.
Watchdog Timer: Ensuring System Reliability

2 weeks ago | eeworldonline.com | Jeff Shepard

Watchdog timers (WDTs) watch MCU operations to ensure reliability, especially in embedded systems, robotics, medical devices, electric grid monitoring, deep space missions, and other critical applications. They are used to detect and correct MCU and software glitches without human intervention. The WDT monitors system operation by listening to signals from the MCU.
What kinematic equations are important for industrial robots?

2 weeks ago | designworldonline.com | Jeff Shepard |Jeff Shepard

A kinematic model is a mathematical representation of a robot’s motion that focuses on the geometric relationships between elements and ignores external forces that affect motion. Kinematic models are used for planning and controlling the paths of industrial robots. Forward kinematics determines the current position and orientation of the end effector based on the angles of each joint in the robot arm.
What is the Coherent Hub Interface?

2 weeks ago | eeworldonline.com | Jeff Shepard

The Coherent Hub Interface (CHI) is used in system-on-chip (SoC) designs to track which processor has the most recent copy of a data block, preventing other processors from using old data. CHI is used in a wide range of applications requiring high-performance cache coherence, such as mobile devices, networking equipment, automotive systems, and data centers.
How can agentic AI be used in autonomous systems like EVs

3 weeks ago | evengineeringonline.com | Jeff Shepard

Agentic AI refers to artificial intelligence systems with a degree of autonomy, enabling them to make decisions, take actions, and learn from experiences to achieve specific goals, often with minimal human intervention. Agentic AI systems are designed to operate independently, unlike traditional AI models that rely on predefined instructions or prompts. Traditional AI models focus on tasks like classification or prediction.
Why are cryogenic microwave power measurements important for quantum computing?

3 weeks ago | eeworldonline.com | Jeff Shepard

Cryogenic (cryo) microwave (µw) power measurements are vital for advancing quantum computing. Delicate quantum devices require operation at cryo temperatures to maintain coherence and stability. Accurate power measurements at cryo temperatures are also required to optimize and debug quantum hardware. This article begins by reviewing cryo zones in a quantum computer and the related µw metrology needs.
How does mobile edge computing work?

3 weeks ago | eeworldonline.com | Jeff Shepard

Mobile edge computing (MEC), also called multi-access edge computing or simply multi-access computing, is part of the confluence of the Internet of Things (IoT) and mobile devices. MEC doesn’t mean processing data on mobile devices. MEC simply processes data closer to its origin. Instead of sending data to the cloud, MEC utilizes edge computing resources like nearby servers or cell towers.
How to avoid common electronics hardware engineering errors

3 weeks ago | eeworldonline.com | Jeff Shepard

There are many ways to arrive at a less-than-optimal electronics hardware solution. This article is an overview, not a comprehensive compilation of possible hardware engineering errors and how to avoid them. Common errors include incorrect component selection, poor circuit design practices, such as grounding or signal integrity issues, improper power supply specifications, neglecting thermal management, and failing to adequately account for environmental factors like moisture or vibration.