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Comparing Parallel Circuits: Practical vs Theoretical Electrical Systems

Comparing Parallel Circuits: Practical vs Theoretical Electrical Systems

We are taught that parallel circuits maintain equal voltage across all branch resistors, equally sharing the source voltage. But reality is often far from ideal, and individual devices certainly impact the rest of the circuit.


What’s the Difference Between a Safety Contactor and a General Purpose Contactor?

What’s the Difference Between a Safety Contactor and a General Purpose Contactor?

Designing a system with motor motion always includes a consideration of safety. Incorporating safety contactors might be the correct prevention to protect equipment and users but may add additional challenges.


Teardown: What’s Inside a 3-Phase Induction Motor?

Teardown: What’s Inside a 3-Phase Induction Motor?

Coil, field winding, rotor, stator, eddy current… When it comes to motors, there are numerous terms that describe the theory of operation, but what is inside a 3-phase motor? Take a look, and learn how they work.


A Dual-powered Protection Relay for Overcurrent and Earth Fault Protection

A Dual-powered Protection Relay for Overcurrent and Earth Fault Protection

Siemens introduces a new addition to the Reyrolle protection product line that is capable of being installed in remote locations with the ability of dual-power sources.


News Dec 08, 2022 by Shawn Dietrich
A Compact and Customizable Generator Circuit Breaker From Siemens

A Compact and Customizable Generator Circuit Breaker From Siemens

Siemens has released a compact, customizable circuit breaker for power generation plants. The circuit breaker is suitable for new installations or retrofits, thanks in part to the customizations available.


News Dec 06, 2022 by Shawn Dietrich
Max Switching Currents Up To 40 A: CUI’s Expanded Power Relay Product Line

Max Switching Currents Up To 40 A: CUI’s Expanded Power Relay Product Line

CUI Devices has further expanded its power relay products. Suited for high-level current switching, the new line of power relays offers max switching currents from 5 A to 40 A.


News Nov 23, 2022 by Damond Goodwin
Understanding the Differences Between Protection Relays vs Control Relays

Understanding the Differences Between Protection Relays vs Control Relays

Protection systems are critical in today’s fast-paced industrial revolution for the safety of people and processes. This article discusses electronic protective relay types and how they differ from standard relays.


Control Automation Online Textbook: The Best Just Got Better!

Control Automation Online Textbook: The Best Just Got Better!

Control Automation is proud to announce updates to several chapters of our popular online textbook. Check out the improvements in the PLC, Feedback Control, and Power Generation sections.


News Oct 23, 2022 by David Peterson
Siemens’ 120 V Solid-state Circuit Breaker Now UL Listed

Siemens’ 120 V Solid-state Circuit Breaker Now UL Listed

Siemens breaks new ground by having a solid-state circuit breaker UL listed for residential, commercial, and light industrial use.


News Oct 12, 2022 by Shawn Dietrich
Life on the Farm: Cleaning Stalls, Milking Cows, and… Robots?

Life on the Farm: Cleaning Stalls, Milking Cows, and… Robots?

Learn how one small farm in a rural community is upgrading production with advanced technology in several ways to overcome staff shortages, product demand, and regulatory compliance.


Info Byte: The Mystery of Ice Cube Relays–Coil Polarity

Info Byte: The Mystery of Ice Cube Relays–Coil Polarity

Relay and other coil devices pose a few confusing questions: How can the relay still work if you connect a DC supply in reverse? How can an alternating voltage attract and hold the load consistently?


Pilz’ New Compact PNOZmulti 2 Standalone Safety Relay

Pilz’ New Compact PNOZmulti 2 Standalone Safety Relay

Pilz has added the PNOZ m C0 to their PNOZmulti 2 product lineup, an easy-to-program, standalone safety relay that provides customers with a compact solution for smaller machines.


News Sep 28, 2022 by Damond Goodwin
Industrial Control Panel Design Standards and Best Practices

Industrial Control Panel Design Standards and Best Practices

Industrial control panels are at the heart of control systems. Learn about the standards and regulations that dictate industrial control panel design for safety and efficiency, including NFPA 70, UL 60947-4-1, and NFPA 79. 


Introduction to Industrial Control Panel Design

Introduction to Industrial Control Panel Design

Whether open or closed, industry standard or built for tough environments, or modular or customized, it is important to follow a set of repeatable tasks when designing industrial control panels for efficiency and safety.


Arc Flash Control with New RVI-43A Vacuum Interrupter

Arc Flash Control with New RVI-43A Vacuum Interrupter

Vacuum Interrupters has announced the RVI-43A replacement vacuum interrupter designed to break circuits in a controlled manner to avoid damage and injury from an arc flash.


News Aug 26, 2022 by Seth Price
Active Power, Reactive Power, Apparent Power, and the Role of Power Factor

Active Power, Reactive Power, Apparent Power, and the Role of Power Factor

The diverse power terms in electrical generation systems include active, reactive, and apparent power, all of which lead to the introduction of ‘power factor’ effectiveness in an AC circuit.


The Annual EETech Engineering Survey of 2022

The Annual EETech Engineering Survey of 2022

The quality of content from our educational site comes from understanding our audience and your needs. Help give us the best snapshot of today’s control industry, along with a free chance to win one of several Amazon card prizes!


News Aug 09, 2022 by David Peterson
Grounding for Control Transformers

Grounding for Control Transformers

Grounding transformer connections presents its own set of challenges. This article addresses these challenges and several common configurations for control transformer grounding.


KEMET’s New “Volumetric Efficient” EMC Solution

KEMET’s New “Volumetric Efficient” EMC Solution

KEMET announces the release of their GTX Metal Case Three Phase Filters which utilize a nanocrystalline metal core to bring forth volumetric efficiency while reducing unwanted electromagnetic and radio-frequency interference.


News Aug 04, 2022 by Gunner Scott
Electrical Resistance Measurement Problems - What Can Go Wrong?

Electrical Resistance Measurement Problems - What Can Go Wrong?

Today’s digital multimeters (DMMs) are inexpensive, accurate, and easy to use, but sometimes a problem with the circuit or the measurement can cause incorrect readings. Learn to interpret and fix these problems.