LM317 & Divider Calculator

22.0

Ioan Florucza

0.00

0 reviews

10,000+
Downloads

Free

LM317/LM337, divider w/ load, power & heatsink—fast, accurate, offline

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10,000+ downloads

Download from Google Play

About LM317 & Divider Calculator

LM317 & Divider Calculator is a tools app developed by Ioan Florucza.

Download Statistics

LM317 & Divider Calculator has been downloaded 12 thousand times. In the last 30 days, the app was downloaded 12 times.

User Ratings

The app has no ratings yet.

App Information

LM317 & Divider Calculator is FREE to download. The APK download size is 30.34 MB. The latest version available is 22.0. The last update was on September 12, 2025.

Technical Requirements

LM317 & Divider Calculator requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play November 2019.

Description

⚡ VAReg - Professional Electronics Calculator for Voltage Regulators ⚡

The #1 trusted toolkit for LM317, LM338, LM117 voltage regulators. Used by 10,000+ engineers, students & hobbyists worldwide for precise circuit design.

🏆 WHY CHOOSE VAREG?
✅ Most accurate LM317 calculator on Play Store
✅ All E-series resistors (E6 to E192) built-in
✅ Real-time signed error display (+/-% accuracy)
✅ Works offline - no internet required
✅ Clean, ad-supported with optional premium features

📱 7 PROFESSIONAL CALCULATORS:

⚡ ADJUSTABLE VOLTAGE REGULATOR (LM317/LM117)
- Smart profiles: Generic, LM317 (Iadj=50µA), Custom
- Find best E-series resistor matches instantly
- Non-standard solve for R1, R2, or Vout
- 🎬 Unlock 10 nearest matches (watch ad for 30 min access)
- Signed error display shows exact deviation

🔌 CURRENT SOURCE (LM317/LM338)
- Calculate constant current 1mA to 5A
- Auto-select optimal resistor values
- Variable precision for low-ohm resistors
- 🎬 Premium: View all 10 standard matches
- Support for high-current LM338 (5A max)

📊 VOLTAGE DIVIDER
- Thevenin equivalent calculations
- Load compensation with current display
- Smart sorting by voltage AND current accuracy
- 🎬 Premium: Access 10 best combinations
- Power dissipation per resistor

🔥 POWER & HEATSINK
- Power dissipation calculator
- Efficiency percentage display
- Thermal resistance (°C/W)
- Quick defaults: Tj,max=125°C, Ta=25°C
- Heatsink sizing recommendations

🌊 RECTIFIER & SMOOTHING
- Bridge & half-wave support
- Capacitor sizing for target ripple
- Component ratings (VRRM, capacitor voltage)
- DC output estimation

📍 BONUS FEATURES:
- IC pinout diagrams (TO-220, TO-3, TO-263)
- Material Design 3 interface
- Light theme optimized
- No signup required

💡 PERFECT FOR:
- Electronics engineers
- Electrical students
- Arduino/Raspberry Pi makers
- Repair technicians
- DIY enthusiasts
- PCB designers

Recent changes:
Enhanced Calculators: Signed error display
Current Source: New 10x matches feature
Voltage Divider: New 10x matches with current display
Improved Matching: Better sorting and formatting
Bug Fixes: All the calculation and display issues we fixed

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More data about LM317 & Divider Calculator

Price	Free to download
Total downloads	12 thousand
Recent downloads	12
Rating	No ratings
Ranking	Not ranked
Version	22.0
APK size	30.3 MB
Number of libraries	7
Designed for Android	5.0+
Suitable for	Everyone
Ads	Contains ads

App Performance Report

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LM317 & Divider Calculator compared with similar apps

Common keywords of similar apps

Matches Heatsink Signed Error Premium Load Accurate Offline Vareg Professional Regulators Design Resistors Accuracy Required Ad Smart Standard Access Source Support Max Sorting Dissipation Sizing Voltage Display Current Divider Calculator Power Resistor Electronics Engineers Students Series Features Calculators Capacitor

Keywords missing from this app

Tools Law App Color Atmega Circuits Code Converter Inductor Pro Filter Reference Connector Calculations Parallel Regulator Time Circuit Utility Unit Electronic Table Led Rf Number Pin Reactance Values Engineering Rc Filters Timer Codes Electrical Port

Downloads over time

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LM317 & Divider Calculator has been downloaded 12 thousand times. Over the past 30 days, it has been downloaded 12 times.

Changelog of LM317 & Divider Calculator

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Developer information for Ioan Florucza

Ioan Florucza

ioan.florucza@gmail.com

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Comments on LM317 & Divider Calculator for Android

★★★★★ It is verry useful especially when you want a specific value of voltage or current using linear regulators.

★★★★★ Great job on this app really enjoy it thank u.

★★☆☆☆ App crashes while calculating R1 and R2 for Vout voltage = 2.5 in lm317 voltage regulator calculation The app just closes for Vout =2.5 check it your self. Thanks

Google Play Rankings for LM317 & Divider Calculator

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Technologies used by LM317 & Divider Calculator

11 permissions · 7 libraries

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