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resistors

How a Simple LED Resistor Calculator is Helping DIYers and Engineers Save Time

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Time will always be “of the essence” for professional engineers and amateur enthusiasts alike. This can certainly be said about the process of designing circuits involving Light Emitting Diodes (LEDs). So, what kind of profound difference could a simple online calculator make?

Before we go any further on that subject, it might be worth reminding ourselves of the fundamentally important role of resistors in LED circuits. [Read more…] about How a Simple LED Resistor Calculator is Helping DIYers and Engineers Save Time

How Do Force Sensors Work? And What Are Their Benefits?

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There are several laws of physics that are based on force. One of these is the well-known principle that when applied to any object of mass, force changes the velocity of the object.

There are other concepts related to force including torque, thrust, and drag – thrust increases the object’s velocity, while drag reduces velocity, and torque generates changes in the object’s rotational speed.

When there’s a balanced distribution of forces in the object, there is acceleration. If you want to monitor the force on an object, you need a device called a force sensor. [Read more…] about How Do Force Sensors Work? And What Are Their Benefits?

Rough seas: Resistors for severe environments

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Container ship New Orleans

Resistor liquid cooling boosts 3.3kV medium voltage loads, and slashes resistor footprint in industrial and marine applications, as David Atkins, projects director at Cressall Resistors explains

In motor driven applications like cranes, lifts, hoists and conveyors, air cooled resistors are common, but in medium voltage, high power applications liquid cooling wins out.

A medium voltage drive running off a 3.3kV supply to turn a 500kW motor will put a severe heating load on the application’s power transistors – hence the need for water cooling.

The new EV2 advanced water cooled modular resistor range for low and medium voltage applications is especially designed to function in severe environments, like the ones marine systems have to function in.

This patented design encapsulates and completely separates the resistor elements from the coolant.  [Read more…] about Rough seas: Resistors for severe environments

Braking resistors that will not break

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cressall braking resistors

David Atkins, projects director at Cressall Resistors, explains why design is essential not only in art, but also in industry, especially when designing equipment such as power resistors for demanding environments like oil and gas

One of the most popular works of Renaissance sculpture is Michelangelo’s David, a piece that has become synonymous with human strength and beauty.

Despite its seemingly perfect proportions, a basic design flaw of the statue has recently been brought to light.

Recurring micro-fractures in the ankles might cause the statue to collapse under its own weight.  [Read more…] about Braking resistors that will not break