OHMs Law Calc 4+
Caladan Software
Designed for iPad
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- $1.99
Screenshots
Description
Calculates OHM's Law for Single and Three Phase Applications. This app uses proper vector calculations to accurately calculate BOTH balanced and unbalanced Three Phase loads. Calculate Watts, Volts, Amps or Ohms easily and quickly. Back calculate Load resistance from voltage and Phase Amps. Just pick a wedge from the OHM's law circle and go! NOW WITH WIDGET SUPPORT!
What’s New
Version 2.1
New version adds support for additional devices and resolvers some on screen keyboard issues
Ratings and Reviews
Quick and Easy!
This app really does calculate Three Phase correctly... Not just using the old "lazy engineers" trick of multiplying by 1.732... But rather doing the actual VECTOR MATH to properly calculate BOTH balanced and unbalanced loads. Works great for resistive AC circuits too!
The app does exactly what it says, makes single and three phase calculations a breeze. I'll never get the wrong Three Phase Breaker again!
Incorrectly calculates for AC
Good attempt, but this calculator works 100% correctly ONLY for DC.
For AC, it ignores Power Factor (PF), caused by ever present out-of-phase Reactive currents. All AC "Power" results are really in "Volt-Amps" (VA) not Watts.
For 3-Ph AC it incorrectly calculates VA, when given Voltage & Current. The correct method is: V x A x 1.73 (Sq Root of 3) = VA
Power in Watts is then:
VA x PF = Watts
PF is always a number between 0 & 1, with 1 being in-phase (purely resistive) current, and 0 being 90 deg out-of-phase (purely reactive) current.
For calculations (where actual PF is unknown) a PF of 0.8 is typically used.
Resistance alone in never the only factor in AC Circuits.
Wow.
3 Phase works!!! Finally an app with 3 phase that works. Great app, highly recommended. Very easy to use UI, saves a lot of time and mistakes. Helpful guide provided on website as well. A must have.
App Privacy
The developer, Caladan Software, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- Jonathan Mellen
- Size
- 7.8 MB
- Category
- Reference
- Compatibility
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- iPhone
- Requires iOS 11.0 or later.
- iPad
- Requires iPadOS 11.0 or later.
- iPod touch
- Requires iOS 11.0 or later.
- Mac
- Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English
- Age Rating
- 4+
- Copyright
- © 2023 Caladan Software
- Price
- $1.99
Supports
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Family Sharing
Up to six family members can use this app with Family Sharing enabled.