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A free online pulse energy calculator that helps designers to select the right wire-wound resistor for their application is now available from Vishay Intertechnology’s website.

Vishay’s new Joule School online pulse energy calculator allows designers to determine the energy of a pulse that could go through a resistor in their application.

The calculator is suitable for selecting wire-wound resistors for applications exposed to large pulses, such as a capacitive charge/discharge or a lightning surge, including phone towers, solar power systems, windmills, welders, test equipment and power supplies.

Joule School offers designers a choice of three pulse types to calculate: square wave pulse, capacitive charge/discharge pulse and exponentially decaying pulse.

After selecting the pulse type, users enter the required variables and click ‘Compute’ to determine the pulse energy and average power.

To determine the best wire-wound resistor to meet their needs, designers can then contact Vishay with the pulse information.

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