Technical Document Library

Please find our range of technical articles below.
These cover a wide variety of transformer theory topics.
These articles and testing guides will help to get the best from your instrument.
Articles can be read on-line, or can be downloaded as PDFs.
All documents can be translated via Google, by using the flag selector in the top right of the screen.
Some of these documents may be available on the downloads page, as pre-translated PDFs.

Tech Note

Part	Name	Description
086-627	The Voltech Handbook of Transformer Testing	This article covers a wide range of transformer theory and Voltech's testing capability.
104-023	Measurements for DC Chokes	This documents outlines test methods for all types of DC Chokes.
104-029	Detecting Shorted Windings	This document outlines the methods used by the AT Series testers to find shorted windings.
104-039	Transformer Basics	This document explains the basic theory and operation of transformers
104-104	Kelvin Connections	Outlines of methods and techniques to obtain high accuracy readings of low resistances.
104-105	Measuring Leakage Inductance	An explanation of Leakage Inductance in transformers, why it is important, and how to best perform measurements
104-112	Using the AT Series User Port	How to use the AT Series User Ports to switch your test fixture during a test for extra test coverage.
104-113	Turns Ratio	An explanation of Turns Ratio and several methods to obtain best measurements.
104-118	Relay Switching Techniques	The technical background to the AT Series testers. Explains how the nodes operate during testing to give accurate 4-wire measurements.
104-127	Laminate Transformer Testing	A document covering Laminate Transformers and methods for accurate testing.
104-128	Ferrite Transformer Testing	A tech note describing theory of Ferrite Transformers.
104-151	Testing with Constant AC Current	How to test transformers at constant current. Covers testing above and below 2 Amps.
104-153	Testing Audio & Telecom Transformers	Frequently asked questions about Audio and Telecommunications transformers
104-160	Testing Chokes and Transformers with High-Current DC Bias	A document covering DC BIAS testing using several different techniques.
104-162	Testing Line Frequency Transformers	This describes the theory and answers common questions on Mains Voltage (50Hz/60Hz) Transformers.

User Manual

Part	Name	Description
098-024	AT3600 User Manual	The full user manual for the AT3600 transformer tester.
098-028	Guide To Fixture Construction	This explains what Voltech can provide to make your own test fixtures and how to get good repeatable measurements every time.
098-072	AC INTERFACE User Manual	The user manual for the AC INTERFACE FIXTURE, which extends the AT3600/AT5600 test range.
098-100	DC1000 User Manual	The DC1000 PRECISION DC BIAS CURRENT SOURCE user manual.