Operational amplifiers notes app icon

Operational amplifiers notes

Guillermo Gerard · com.apps.onebuttondev.opampcalculator

Not rated yet 10K+ downloads v3.3.0 9.5 MB Android 5.0+ PEGI 3 · Everyone

Download APK 9.5 MB All versions

At a glance

Latest version
v3.3.0 (19)
Updated
Sep 4, 2025 (1 year ago)
APK size
9.5 MB
Requires
Android 5.0+ (API 21)
CPU support
Any (no native code)
Category
Demo (app)
Listed since
Jan 11, 2020 (at least)
Permissions
5
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Operational amplifiers notes is an app by Guillermo Gerard in the Demo category, listed since at least January 2020. It has no native code, so it runs on any Android processor.

It asks for 5 permissions, none of them sensitive.

What's new in v3.3.0

v3.3.0 General updates and bug fixing. Major update using AndroidX v3.2.3 Added privacy policy to comply with google's policies, bug fixes, added donate menu item. v3.2.1 Added option to move to SD. Library updates. v3.1.3 Library updates to comply with Google's policies

Description

From the listing uploaded by “catappult”.

A calculator created to help with operational amplifiers circuits. It not only calculates the output voltage; instead of that, the app allows you to select which one of the circuit's component will be the unknown to be calculated based in the value of the others. Included configurations: -Inverting -Non inverting -Differential -Summing inverting -Summing non inverting -Instrumentation (3 operational amplifiers) Keywords: electronics, operational amplifier, electronic circuits

Security & authenticity

Security rating: Trusted

Signing certificate

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

Store checks and file details

  • Developer signature verified Apr 21, 2020
  • Antivirus scan passed Sep 3, 2020
  • Signed byCN=Guillermo Gerard, OU=One Button Development, O=One Button, L=Comodoro Rivadavia, ST=Chubut, C=AR
  • Signing certificate (SHA-1)66:DA:91:27:FA:E7:21:1E:07:94:AA:86:46:99:60:B7:00:D2:F4:E3
  • File MD510f2f5e2c5484cd2a8acb6f67a3ed93d
  • Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018

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.

Permissions (5)

Operational amplifiers notes requests 5 permissions, none of them sensitive.

Required hardware & features

Operational amplifiers notes 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 Operational amplifiers notes 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 10f2f5e2c5484cd2a8acb6f67a3ed93d.

Tags

apps onebuttondev opampcalculator demo operational amplifiers notes

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