How to Use Ametherm's Inrush Current Calculators
Ғылым және технология
This video takes you step-by-step through how to calculate the inrush current for a capacitive circuit so that you can select the right inrush current limiter with the right joules rating for your application. We will use a customer example to demonstrate our calculators and walk you through each calculation so you can see how this process allowed our customer to quickly select the right inrush current limiter and solve their problem. The video will discuss the information you need for selecting the right inrush current limiter and present three easy calculations based on that information to determine the minimum resistance, steady state current, and maximum energy rating in joules. To learn more, get help with calculations, or start using our calculators to solve your problem, visit us online at www.ametherm.com/contact-us/
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This is an amazing video ... really helped,,, in selecting the right current limiter ...
Steady State Current calculation as listed on the slide is wrong but the calculator is correct. Current = Power/Vac then divided by efficiency.
I recently tried wiring a NTC in series with my fridge compressor in an attemp to limit inrush current on start. I measured the regular inrush current of the compressor, it was about 50A @ 127Vac. I wired a single 10Ohm NTC in series, and expected the inrush to drop about 5 times, following Ohm's Law (127Vac/10Ohm = 12.7A). However, the results were quite unexpected haha. The inrush current still measured around 48A @ 127Vac, a negligible drop, futhermore, for my surprise, the NTC literally exploded on start LOL. Somehow it still managed to keep functioning after the inrush. Steady state current is about 2A, way less than NTC max. steady current specified on datasheet of 5A.
how to calculate inrush current for voltage regulator using load current
How to correctly connect the Scope for testing Inrush Current?
isn't better to measure the inrush current?