E-Formulas
| Category | Price | Seller | Device |
|---|---|---|---|
| Utilities | $6.99 | Serafini Studios | iPhone, iPad, iPod |
Easily solve any of the variables in 22 of the most useful formulas in electronics including the first Voltage Drop calculator in the App Store. Over 70+ formula variations in total. Standard international units are fully supported and results are automatically computed using unit picker control.
FEATURES
• Includes custom numeric keypad for rapid and accurate entry of numbers
• Select specific unit multipliers for each variable
• Graphic representation of each formula for easy identification
• Each formula includes a descriptive overview and link to Wikipedia for more in-depth information
• Shake to clear all values
INCLUDED FORMULAS
• Ohm's Law
• Power
• Power Dissipation (Current)
• Power Dissipation (Voltage)
• Joule's Law
• Voltage Drop
• Capacitive Reactance
• Inductive Reactance
• Impedance
• Resonance
• RC Time Constant
• RL Time Constant
• Power Gain
• Voltage Gain
• Frequency Wavelength
• AC Peak Voltage
• Parallel Resistance
• Series Resistance
• Parallel Capacitance
• Series Capacitance
• Parallel Inductance
• Series Inductance
INCLUDED BASE UNITS
• Ohms
• Amps
• Volts
• Watts
• Farads
• Henrys
• Hertz
• Seconds
• Decibels
• Meters
• Joules
• AWG
• cmil (Circular Mils)
• mm2 (Square Millimeters)
FREE UPDATES
Future versions including additional formulas will be free.
SUPPORT
To request the addition of a new formula, make a suggestion or report a bug please send an email to [email protected]
Reviews
Solid
N7CAM
Very cool. This app is very smooth and easy to use. It puts all the formulas for various electronics projects right in my hand and helps me better understand the more complex and less used formulas. The link to Wikipedia is great for further understanding how to use the formula and to better understand what's happening with relation to the project. Thanks!
Too expensive
RU4692
Very useful and easy to use. This app is exactly what I was hoping it would be definately buy it if you're into electronics.
Electrical Inspectors, Contractors & Electricians This Is It!
Inspector-Gadget
This application has all the electrical formulas you need. When I first purchased this application, I thought it had everything you need except a voltage drop calculator. I sent an email to the developer and asked if they could add a voltage drop calculator based on the National Electrical Code requirements of 3 percent for branch circuits and 5 percent for feeders and branch circuits combined, with the ability to calculate wire size based on the AWG. The developer replied back and said it was a great idea. A few updates later, there it is! A full functional voltage drop calculator along with all the other Electrical and Electronics calculators. I got other Electrical calculators prior to this one, but after getting this one….none of the others matter anymore. This has everything. If you have any other ideas, just email the developer, if it can be done, they will do it :-)
Good job
CritiqueQue
I work in the utility industry and find this app very useful in the field. I would like to see the ability to calculate a series/parrallel circuits resistance. And possibly see the electrical diagram drawn out on each calculator page.
Engineer
Donnie Herman
OUTSTANDING! Good job! Bigger price tag but this app shows it. People who say this app lacks isn't that educated. Any more and this app would build the circuit for you. I am pleased!
Poor app
sandiagold
Don't belive everything you read! This is In no way usefull for utility work! They who say so must be new to power. No 3 phase calcs. So you decide if all the reviews are honest. Obviously I wish I could get my money back. Being new to the APplication down loading world, buyer beware!
Ugly's book?
shoney369
I like this app. I request that you add more info from the Ugly's book though. It would be great if I had the nec code book on my phone or a copy of the Ugly's book. I need things like conduit fill. Add more info and u get more stars. For 6-7 $ you could add more. Thanks.
Good program, but expected more
Anime Escobar
It's a great program, nice interface, works properly. I expected more updates with new features though. Such as being able to calculate multiple resistances in series or parallel, or a complex circuit of both. The people who make the program are friendly and quick to respond. My only real complaint is lack up updates of features. I'll change my review once I see some of the new stuff available that many users have been asking for.
