Arena Blog

Four online resources that help engineers save time

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One of the best parts of working at Arena is supporting the people who bring some of the world’s most innovative products to market. Our customers, whether electric vehicle designers or 3D printer manufacturers, make the world a better and more exciting place, and in return we do as much as we can to enable their progress and facilitate their growth.

To that end, we continue to evolve our offerings and online resources so that makers and innovators can get high-quality products to market faster and with ease. We are always looking for ways to support those involved in the product development process—people like engineers and even suppliers, who work alongside operations and manufacturing to create and build products.

In addition to creating our own tools, like Arena PDXViewer, we like to spread the word about valuable web services and time-savers for manufacturers and engineers whenever we find out about them. Our VP of Product Design, Marc Escobosa, recently directed me to four sites that he thought were particularly useful to engineers. I’d like to share them with you now.

Let me know if you find these resources helpful—and if you have other time-savers you’d like to share, please add them in the comments below.

Analog Circuit Simulator

The Analog Circuit Simulator is an applet that simulates the activity of electronic circuits, and is a useful tool for electrical engineers during the design process. The simulator shows an animated schematic of a simple LRC circuit, with different colors showing positive voltage, ground, negative voltage and current.

There is a lot of functionality available on this tiny applet. You can move your mouse over any component of the circuit to see a short description of that component and its current state, and can easily modify components as well. You can also access a “Circuits” menu, with sample circuits for you to try digitally before considering them for a project.


CalculatorEdge is a website with hundreds of free online engineering calculators and formulas that can help you solve complex equations in the fields of electrical, mechanical, civil and chemical engineering, electronics, metallurgy, physics, math and more.

The site is extremely dense, and once you click into a particular subject area there are many specific calculations the site can help you with. For example, a quick glance at the Electronics Engineering section reveals calculators that assist with Ohm’s Law, voltage drop, air core inductor inductance, heat sink temperature, battery life and more.

EE HomePage

EE HomePage offers tools, educational materials and advice for electrical engineering professionals, educators and students. This site also has tips for managing and promoting an engineering career.

There are many varied resources on this site, and there is a dedicated “tools” section that gives quick and easy access to things like a browser-based RPN calculator, filter design software, reusable robotic software and more.

The Engineering ToolBox

As the name implies, The Engineering ToolBox is a resource guide for everything related to design, engineering and various technical applications.

There are a lot of times in the design process this site could be useful. Say you need to know more about a material you’re working with. Just click on the Material Properties link. You can quickly find anything from Prandtl’s number for air temperatures to the chemical resistance of CPVC pipes. You can also access 2D and 3D drawing tools, instrumentation and process control system information and much more.

The other helpful thing about The Engineering ToolBox is that it is customizable—you can save relevant links to a Short List, so it’s literally your own personal toolbox. Depending on your current needs, you can switch up the links and make your own reference guide.

About the Author

Alex Gammelgard

Alex managed social media marketing and communications at Arena from 2011 to 2012. Although coming in fresh to the manufacturing industry, Alex is married to an engineer and is well ...

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