Latest Electrical Power Control Technical Articles

When troubleshooting AC outputs driven by TRIACs, some confusing meter readings can result from the solid state…

When troubleshooting AC outputs driven by TRIACs, some confusing meter readings can result from the solid state properties of a series circuit. In this article, learn proper troubleshooting techniques.

Current flow in wires is often modeled with a perfectly circular cross-section, with the size of the wire being…

Current flow in wires is often modeled with a perfectly circular cross-section, with the size of the wire being responsible for the maximum current. This is true, but there’s more to the story.

There are two types of winding designs inside three-phase industrial motors: Wye and Delta. Although the motors and…

There are two types of winding designs inside three-phase industrial motors: Wye and Delta. Although the motors and connections look similar on the outside, this article discusses the internal construction for Delta wound motors.

Every so often, a new data format comes along, and we first consider that it might simply be a mistake in typing. Pulse…

Every so often, a new data format comes along, and we first consider that it might simply be a mistake in typing. Pulse Frequency Modulation (PFM) is not brand new, but still unknown to many engineers.

Many signal sources and process transmitters do not include isolation, which can cause problems when the instruments are…

Many signal sources and process transmitters do not include isolation, which can cause problems when the instruments are at different locations. A loop powered isolator is often the solution.

When beginning a new career, an obvious question is how to take positive steps, from your first day inside the plant all…

When beginning a new career, an obvious question is how to take positive steps, from your first day inside the plant all the way to becoming an experienced senior operator.

Sequential function charts (SFCs) are a great tool when processes require sequence control, but things can get…

Sequential function charts (SFCs) are a great tool when processes require sequence control, but things can get complicated fast. Here are some ways to create better SFC programs and applications.

Function block diagram (FBD) programming is a common language for PLCs following the IEC 61131 standard. What is FBD, and…

Function block diagram (FBD) programming is a common language for PLCs following the IEC 61131 standard. What is FBD, and how does it differ from the familiar ladder logic programs?

From forest to felling, logging road to mill, finished lumber’s adventure on its way to market is filled with control…

From forest to felling, logging road to mill, finished lumber’s adventure on its way to market is filled with control and automation. Learn about the process from start to finish and how lumber mills ensure the world has access to high-quality lumber thanks to control technology.

Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do…

Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do explosions occur, and what practices exist to reduce such risk for equipment and workforce?

Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief…

Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief tutorial on how an M5Stack Core can offer a simple, effective low-cost Arduino OpenPLC HMI solution.

Transformerless UPS designs are taking place in various industries, particularly in aseptic manufacturing,…

Transformerless UPS designs are taking place in various industries, particularly in aseptic manufacturing, pharmaceuticals, and healthcare, where the reliability of power supply is critical.

Using the right motor for the right task is critical - but what happens if the motor is connected to the wrong supply? It…

Using the right motor for the right task is critical - but what happens if the motor is connected to the wrong supply? It is never recommended, but important to quickly understand symptoms of incorrect wiring.

Measuring time delays between equipment events predates digital control systems. What are the types of timers, and how…

Measuring time delays between equipment events predates digital control systems. What are the types of timers, and how did they work before the advent of PLCs? And how do PLCs continue the tradition?

Direct current (DC) motors have existed since the late 19th century. What sets these motors apart from AC models, how do…

Direct current (DC) motors have existed since the late 19th century. What sets these motors apart from AC models, how do you control them, and how can you tell when it’s time to repair or replace them?

Industrial and robotics cabling requires specialized termination strategies. This article introduces connectors involved…

Industrial and robotics cabling requires specialized termination strategies. This article introduces connectors involved in automation applications for cable-to-cable or cable-to-device termination.

Transformer types can vary from small instruments to large power distribution systems. 3-phase systems require…

Transformer types can vary from small instruments to large power distribution systems. 3-phase systems require transformers that employ the same wye and delta arrangements common to industrial motors.

We usually think of joysticks in terms of video game controllers, but they exist in all kinds of industrial systems:…

We usually think of joysticks in terms of video game controllers, but they exist in all kinds of industrial systems: heavy equipment, overhead cranes, and even some robotic controls. But how do they work?

Variable control allows external conditions, like temperature, to be monitored so the controller can activate devices to…

Variable control allows external conditions, like temperature, to be monitored so the controller can activate devices to heat or cool the system as needed. Simulate a temp controller with low-cost components!