Audio Transformer Calculator1.5.4 - App Store

Audio Transformer Calculator

Professional 3-in-1 Transformer Design Tool for Tube Audio and Electronics

Audio Transformer Calculator makes transformer design fast, accurate, and easy. Whether you're building a guitar amplifier, hi-fi tube amplifier, studio recording equipment, or a custom electronics project, this application helps you calculate proven transformer designs in seconds.

Designed for both beginners and experienced transformer winders, the app combines powerful engineering calculations with an intuitive workflow that removes the guesswork from transformer design.

THREE POWERFUL CALCULATORS IN ONE APP

Power Transformer Calculator

* Tube amplifier power supplies
* Audio equipment
* DIY electronics projects
* Laboratory equipment
* Custom power supplies

Single-Ended (SE) Output Transformer Calculator

* Guitar tube amplifiers
* Hi-Fi amplifiers
* Studio equipment
* Custom audio projects
* Ultra-Linear (UL) output transformers

Push-Pull (PP) Output Transformer Calculator

* Accurate push-pull output transformer calculations
* Optimized core selection
* Ultra-Linear (UL) transformer support

SMART CORE AND BOBBIN WIZARD

The built-in Core and Bobbin Wizard automatically finds the optimum core and bobbin size for your design.

* Selects the ideal core size
* Determines optimum bobbin dimensions
* Calculates winding window utilization
* Ensures windings and wire sizes fit correctly
* Helps prevent costly design mistakes

ADVANCED WINDING FEATURES

* Tapped and continuous windings
* Bias taps for power transformers
* Universal speaker taps for SE and PP output transformers
* Ultra-Linear (UL) taps for audio output transformers
* Multi-secondary configurations

METRIC AND IMPERIAL SUPPORT

* Metric dimensions and wire sizes
* Imperial dimensions and AWG wire sizes

DETAILED DESIGN DATA

* Core selection
* Bobbin selection
* Number of turns
* Wire sizes
* Layer calculations
* Current ratings
* Winding resistance estimates
* Winding window utilization

PERFECT FOR

* Guitar amplifier builders
* Hi-Fi enthusiasts
* Audio engineers
* Transformer winders
* DIY electronics hobbyists
* Tube amplifier restorers
* Studio equipment designers
* Students and educators

WHY AUDIO TRANSFORMER CALCULATOR?

* Three calculators in one application
* Power Transformer Calculator
* Single-Ended (SE) Output Transformer Calculator
* Push-Pull (PP) Output Transformer Calculator
* Ultra-Linear (UL) transformer support
* Smart Core and Bobbin Wizard
* Automatically verifies that windings fit the bobbin window
* Supports tapped and continuous windings
* Metric and Imperial units
* Professional-grade calculations
* Proven real-world transformer design methods
* Suitable for beginners and professionals alike

Whether you are winding your first transformer or designing professional audio equipment, Audio Transformer Calculator provides the tools you need to create accurate, reliable transformer designs with confidence.

Design better transformers. Save time. Avoid costly mistakes.

Version History Fixed the text that was not visible if phone was set to Dark mode. 1.5.4 Jun 23 Description changed. 1.5.3 Jun 16 Fixed minor interface and calculation errors. 1.5.2 Jun 15 The fully upgraded version now includes Delatsch Wizard which helps you select the optimum bobbin and core for your transformers!
UL taps and tapped secondaries so you can have continuous taps. 1.5 Jun 14 Fixed compatibility issues with the latest iOS version. 1.4 01/21/2024 Fixed the bug in SE2 calculation where the app couldn't accept decimal value for direct current.
Added the version for Mac OS. 1.3.1 01/31/2022 Fixed app crashing in imperial PP and SE calculator. Fixed recalculating the recommended core cross section for both metric and imperial. 1.3 08/06/2021 Fixed the minor bug where the title would be deleted if you changed only the voltage or current and vice verse. 1.2 07/19/2020 Fixed a bug where you couldn't use comma symbol in European countries.
Added option to view and edit primary and secondary winding voltages and impedances.
Changed the confusing text box for minimum cross section with a label. 1.1 07/18/2020 1.0 02/29/2020