Project 04 · Magnetics Manufacturing

Power Transformer
Design & Manufacturing

Custom step-up and step-down control transformers for industrial, power electronics, automation and EV charging applications — 10 W to 2 kW, wound with CNC precision winding technology.

10W – 2kW CNC Winding Active Production Isolation / Control SMPS / Toroidal EV Charger Ready

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CNC-Wound Control Transformers — 10 W to 2 kW

Isolation · Control · SMPS · Toroidal · Inverter

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Compute turns ratio, core area, winding parameters and efficiency for your custom transformer specification.

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Project Overview

What we manufacture

AuMi designs and manufactures a complete range of step-up and step-down control transformers for industrial automation, power electronics, UPS systems, EV charging and specialised electronics applications. Every transformer is engineered to specification using precision CNC winding machines, ensuring consistent electrical performance across all production units.

The portfolio spans isolation transformers, control transformers for PLC and relay panels, low-frequency inverter transformers, high-frequency SMPS magnetics and toroidal designs for audio and medical electronics — from 10 W to 2 kW.

Strategic Importance

The transformer manufacturing programme builds in-house core competencies in magnetic design, winding technologies and insulation systems — directly supporting AuMi's long-term roadmap into electric motor design and manufacturing. The expertise, tooling and processes developed here form the foundation for future EV motor production capability.

Application-Specific Solutions

Custom voltage ratios, power ratings and mechanical formats for exact application requirements.

High Reliability & Long Life

Class H insulation systems, vacuum impregnation and thermal design for 20+ year operational life.

Optimised Efficiency

Silicon steel and ferrite core selection minimises no-load losses and maximises efficiency at rated load.

Consistent Manufacturing Quality

CNC winding machines ensure layer uniformity and insulation integrity across every production unit.

Motor Manufacturing Foundation

Magnetic design expertise, winding infrastructure and production processes directly transferable to electric motor manufacturing.

Product Portfolio

Transformer Range

Standard product lines available for immediate enquiry. All types available in custom specifications.

Product Type	Input Voltage	Output Voltage	Power Rating	Key Applications
Isolation Transformer	230 V AC	230 V AC	100 VA – 2 kVA	Medical equipment, UPS systems, panel isolation
Control Transformer	415 V AC	230 / 110 / 24 V	50 VA – 1 kVA	PLC panels, CNC machines, relay circuits
Inverter Transformer	12 / 24 / 48 V DC	230 V AC	500 W – 2 kW	Home inverters, solar hybrid systems, UPS
SMPS Transformer	Custom	Custom	20 W – 2 kW	EV chargers, SMPS power supplies, telecom
Toroidal Transformer	230 V AC	12 / 24 / 48 V	50 VA – 2 kVA	Audio equipment, medical electronics, precision systems
Inductors & Chokes	—	—	Up to 1 kW systems	Line chokes, DC inductors, EMI filter magnetics

Engineering & Manufacturing Scope

What's Involved

Specification & Magnetic Design

Transformer specification analysis, turns ratio calculation, flux density, core loss estimation and winding arrangement.

Core Material Selection

Silicon steel, amorphous, ferrite and toroidal core selection based on frequency, loss and cost requirements.

CNC Precision Winding

Layer winding, section winding and interleaved designs using CNC winding machines for consistent, repeatable coil geometry.

Thermal & Efficiency Analysis

Copper and core loss calculation, temperature rise modelling and insulation class selection for target operating conditions.

Prototype & Testing

Prototype build, open/short circuit tests, insulation resistance, dielectric strength and temperature rise validation.

Manufacturing Process & QA

Production jig design, winding process control, vacuum impregnation, curing and end-of-line electrical testing.

Motor Manufacturing Competency

Building winding, insulation and magnetic design expertise directly applicable to future EV motor stator manufacturing.

Need a custom transformer?

Specify your voltage, power rating and application — we'll provide a design and quotation.

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Power TransformerDesign & Manufacturing