Coil calculator app icon

Coil calculator

Wim Ton · ch.wimton.coil

Not rated yet 5K+ downloads v1.0 31 KB Android 2.2+ PEGI 3 · Everyone

At a glance

Latest version
v1.0 (1)
Updated
Jun 29, 2020 (6 years ago)
APK size
31 KB
Requires
Android 2.2+ (API 8)
CPU support
Any (no native code)
Category
Tools (app)
Website
wimton.dyndns.org
Developer contact
[email protected]

About this APK

Coil calculator is an app by Wim Ton in the Tools category. It has no native code, so it runs on any Android processor.

Description

From the listing uploaded by “split-store”.

For example: resonant frequency from L and C, reactance from frequency and capacity etc. The drop down menus on the right set the unit and with it the function. This shared functions allow the application to fit on the smallest of smartphones without scrolling. There are basically 2 modes: inductance and LC, set by the 5th menu. The length units and the Al are used in inductance calculations. Reactance and admittance are related to L, C and f calculations. When only the diameter and wire size is filled in, X calculates the impedance of an air filled coaxial line. The right-hand menus also perform unit conversions, like Hz - rad/s, AWG - SWG - mm, resistance - conductance, fractional inches such as 1”¾ to SI (not the other way though). The bottom right menu sets the inductance calculation algorithm: Classical “Wheeler”. If the number of turns does not fit on a single layer, the multi-layer version is used. “Zwicky” which takes into account all corrections to Wheeler “Al” for toroïds and pot cores No space “ooooo” and single wire thickness spaced “o o o o“ single-layer coils. As the input of most algorithms for inductance are the length and the number of turns (on which the length depends) this option gives a rough estimate of turns and length given only the inductance, diameter and wire size. “Wire”: inductance of a straight wire “GP”: inductance of a wire over a ground-plane. The bottom row shows the total wire length and resistance, taking the skin effect into account. Only copper and silver “Ag” are available as material. Toroid picture from http://hiqsdr.com/

Security & authenticity

Security rating: Trusted

Signing certificate

  • Certificate issued to “hb9ezf” The developer's name — though anyone can put any name in a certificate.

Store checks and file details

  • Developer signature verified Oct 5, 2020
  • Antivirus scan passed Jan 26, 2021
  • Signed byCN=wim ton, O=hb9ezf, L=riniken, ST=ag, C=ch
  • Signing certificate (SHA-1)11:5E:62:84:0A:53:C1:49:17:16:E6:16:8F:F1:B5:42:1A:2A:45:AD
  • File MD5de0c1995a590a1b035952ced2215e227
  • Uploaded by “split-store” Gold tier · 24,358 followers · uploading since 2019

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Required hardware & features

Coil calculator APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Coil calculator APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is de0c1995a590a1b035952ced2215e227.

Tags

More Tools apps