TEMCo Standard and Custom Transformer Manufacturer

TEMCo is a Transformer Manufacturer You Can Trust - a Member of The Better Business Bureau. TEMCo  Is an Accredited Member of the Better Business Bureau.  Offering Stock and Custom Transformers.

TEMCo is a Standard and Custom Transformer Manufacturer you can trust - a member of the Better Business Bureau.

Variable Transformer

Quality Built Standard and Custom Variable Transformers
Your search for high quality, obscure, hard to find, or standard power variable transformers is over!

Lowest Prices for Quality Variable Transformers - Guaranteed!
Call Toll Free
1-800-613-2290 (US Calls) or 1-510-490-2187 (US & International)
Fax 1-510-490-1507 email: info@temcotransformer.com www.TemcoTransformer.com

Order Transformer Transformer Selection Guide Custom Transformers Dry-Type Transformers Auto Transformers Control Transformers Step-Up Transformers Step-Down Transformers Harmonic Cancellation Isolation Transformers K-Factor Rated Transformers 3-Phase Transformers European Voltage Transformers Drive Isolation Transformers High Voltage Transformers Epoxy Encapsulated NEMA 4 Transformers Weatherproof NEMA 3R Transformers Transformers AC Transformer Voltage Transformer Buy Transformer New Transformer Output Transformer Transformer KVA Converter Transformer Line Transformer Toroidal Transformer Transformer Wiring Transformer Circuit Variable Transformer Pole Transformer Transformer Pad VA Transformer WYE Transformer Potential Transformer Transformer Protection Variac Transformer Rating Sunbelt Transformer Pacific Transformer Jefferson Transformer Electric Transformer Power Transformer Transformer Sizing Transformer Rectifier Center Tap Transformer Pad Mounted Transformers About US - TEMCo Transformer Manufacturer Transformer Manufacturer Home

transformer guide
Small kVA 3 Phase Transformers Guide

TEMCo - The Best Selling Custom Transformers in America



Transformer Models
TEMCo Transformer manufactures a wide variety of high quality stock and custom transformers. Trust TEMCo as your transformer manufacturer supplier.

Phase Converters
TEMCo Rotary Phase Converters provide balanced 3-phase power converted from a 1-phase power source.

Motor Generator Sets
TEMCo Motor Generator Sets are used to provide load isolation, frequency conversion, and phase conversion.

Electric Motors
TEMCo carries thousands of models and brands of electric motors and drives such as Baldor Motors, WEG and Leeson at wholesale prices!

Electric Generators
TEMCo carries thousands of models and brands of electric generators such as Robin Generators, Pow'R Gard and Baldor Generators at wholesale prices!

Variable Frequency Drives
TEMCo caries a range of high quality VFDs are wholesale prices. Applications range from controlling speed, torque, breaking, direction, multi-speed, etc.

Custom Transformers
TEMCo offers highest quality custom transformers fast! 5-day turn around on most models. Call our Transformer Manufacturer Specialists with your specs. We will give you a quote and get your custom transformer order started today! 510-490-2187.

State-of-the-Art Variable Transformer Manufacturer Offering Top Quality at Wholesale Prices

Variable Transformer

With TEMCo, quality and service has established us as a leader in the electrical power related products industry.  Offering a variety of brands and models of product, including stock and custom units, TEMCo continues to set new standards of excellence.  We ship a multitude of electrical units and equipment from around the world, achieving the fastest delivery time available.  Order a variable transformer (see also variac) from TEMCo and notice the superior design and performance.  Manufactured and/or distributed by a team of highly trained staff, TEMCo products are built to exceed customer expectations.  Internationally regarded as making electrical devices that possess superior architecture with durability and reliable output, TEMCo sustains itself as a leader in electrical technology uncovering innovative techniques that afford cutting edge inventions.  Order a variable transformer or other type of electrical product, yet request it made to certain specifications.  At TEMCo, we thrive with customized orders and can typically build the unit in less than a week.  Allow us to help you today!

Variable Transformer Application

How can you adjust a transformer’s voltage range from a few volts to over 100% input voltage?  A variable voltage transformer is an efficient way of changing voltage. They provide a great degree of flexibility in changing the ratio between the primary and secondary coils.  They are very simple to operate, and controls are available for automatic adjustment to maintain voltage output.  The amount of voltage change obtained depends on the type or model of variable transformer used.

Single & Three Phase Variable Transformer Application

Basic single phase variable transformers are rated either 120 volts or 240 volts.  Higher voltage is achieved by combining or ganging 120-volts or 240-volt units.  An example of this if you want a 480 volt single phase application it can be met with two 240-volts variable transformers ganged in a series connection.  For a three phase application, three 120-volt units are ganged in a wye connection which results in a 240 volt line-to-line three phase assembly.  Or you could take three 240 volt units ganged in a wye connection which would give you a 380 volt or a 480 volt line-to-line three phase assembly.  In each of these cases, the individual transformers are identified with the basic voltage rating of either 120 volts or 240 volts.  When variable transformers are connected in an open delta for three phase applications, two 120 volt units are ganged for 120 volt line-to-line usage.  In any of the above voltage applications, higher current requirements are met by paralleling two or more units in the ganged assembly.

Variable Transformer Construction

Most variable transformer are constructed as a toroidal, or doughnut shaped transformer with a magnet steel core.  A single layer of enamel covered magnet wire is tightly wound around the core.  Each end of the winding is securely fastened and the entire winding is lacquered locking the winding to the core.  A track then is carefully machined around the toroid periphery.  A carbon brush is positioned to be rotated around this track, this brings variable output voltage to separate terminal.

Variable Transformer Output

Variable transformers mostly are used as auto-transformers allowing units to be wired in a configuration which yields a higher voltage out than applied as input voltage.  The typically increase in voltage is usually around 15% above the applied voltage, where output can be varied between 0 volts and 15% above the input voltage.

Variable Transformer Specialists

TEMCo wants to help you achieve your goals.  We know the significant impact that is possible by utilizing the best available equipment on the market.  Contact TEMCo to fulfill your electrical power equipment necessities and receive the utmost in customer care.  Specialists within our team can provide technical support and direction during your purchase, thereby helping you to make educated decisions for your specific electrical needs.  Whether you are searching for a variable transformer or a different type of electrical product, TEMCo offers a wide selection and attentive service.  We aim to meet the expectations of all of our customers, which is the reason the Better Business Bureau has acknowledged us with favorable reports for many years.  Order a variable transformer with us today - it is our pleasure to serve you!

 *Custom Variable Transformer Voltage Combinations Available*

Contact our team at TEMCo Transformer at 510-490-2187 to get your quote, place your order and arrange for shipping.

Variable Transformer

We Supply A Wide Variety of High Quality Power Variable Transformer Models

Variable Transformers

Variable Transformer

Variable Transformer 1

Variable Transformers

TEMCo Transformer Manufacturer Distribution: The Custom Transformer Manufacturer Supplier of Choice for Electricians and Manufacturers.

Worldwide Power Transformers Manufacturer

Quick Nationwide and International Shipping from Regional Warehouses

TEMCo Transformer Manufacturer Distribution: High Quality, Efficient, Fast Turnaround of Custom Transformers Manufactured to your Specs!.

Call for variable transformer information. Variable Transformers manufactured for sale throughout the U.S. and Internationally.

Quality Companies Choose TEMCo Transformer - TEMCo's Customers Include:


TEMCo has experience manufacturing electrical products since 1968. TEMCo is a transformer manufacturer supplier you can trust - a member of the Better Business Bureau. We use the latest proven technology to spec manufacture high quality industrial grade transformers and other electrical products. All our products are built to last using the highest quality standards using only the highest quality supplies. As a result, TEMCo electrical products have a long operational life, lasting many years under proper use. All models are backed by our quality warranty, offering heavy duty quality at a great price.

TEMCo is an Accredited Member of the Better Business Bureau.  Offering Stock and Custom Transformers.TEMCo is a Stock and Custom Transformer Manufacturer You Can Trust - a Member of The Better Business Bureau.

Ordering is as easy as 1, 2, 3.

Transformer Manufacturer

2. We Accept Visa, Discover
American Express, Master Card.

3. We'll ship your order to
you asap.

Order your transformer, three phase converter, motor, or generator with VISA, Master Card, American Express, etc., Today!

We will ship it to you asap! or We will ship your transformer, power generator or motor asap!

We also accept Wire Transfer, Money Orders, etc.

And by other professional trucking companies.

RFQ and Order Fax: (510) 490-1507
We appreciate feedback, send us email us at
please include a phone # to reach you.

TEMCo US + International Phone #: 1-510-490-2187
TEMCo US Only Phone #: 1-800-613-2290

TEMCo Transformer Manufacturer Distribution is currently looking for new resellers.
If you are a qualified reseller, call for a TEMCo Transformer reseller application.

Order Transformer Transformer Selection Guide Custom Transformers Dry-Type Transformers Auto Transformers Control Transformers Indoor TMC Enclosed Control Transformers Indoor TMO Open Control Transformers Indoor TMTB Enclosed Control Transformers Copper Transformers Energy Star, TP1 Rated Transformers Step-Up Transformers Step-Down Transformers Harmonic Cancellation Isolation Transformers K-Factor Rated Transformers 3-Phase Transformers European Voltage Transformers European Voltage 3 Phase 60Hz Transformers European Voltage 3 Phase 50Hz Transformers Drive Isolation Transformers High Voltage Transformers Epoxy Encapsulated NEMA 4 Transformers Weatherproof NEMA 3R Transformers Transformer Manufacturer About US - TEMCo Transformer Manufacturer TEMCo Privacy Notice Oil Filled Transformers Voltage Regulator Automatic Voltage Regulator DC Power Supply PDU Rack PDU Power Conditioner Power Line Conditioner Load Center Switchgear Voltage Converter 2 Phase Transformer Power Distribution Industrial Transformer Replacement Transformer Insulation Transformer Micron Transformers Westinghouse Transformer Power Supply Transformer Instrument Transformer Pulse Transformer Substation Transformer Furnace Transformer About US - TEMCo Transformer Manufacturer Transformer Manufacturer Home

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Here are a few other brands of quality transformers that we also carry:
Acme Transformers K-Rated Transformers Three Phase Transformers Distribution Transformers GE Transformers Pad-Mounted Transformers Step Up Transformers Step Down Transformers Buck Boost Transformers High Voltage Transformers Isolation Transformer Electrical Transformer Single Phase Transformer Three Phase Transformer Hammond Transformers
Single Phase Transformers Three Phase Transformers Isolation Transformers Buck Boost Transformers

Other Quality Products: Diesel Generator Diesel Power Generators Diesel Generator Sets Power Generators Onan Diesel Generators Variable Frequency Drive Soft Start Drives Motor Control

Capacitor for Motor: Start Cap Run Capacitor Starting Capacitor Air Conditioner Capacitor Motor Capacitor Replacement Capacitor Test Capacitor

Magnet Wire Copper Wire Magnetic Wire CU Wire Craft Wire Enamel Wire Jewelry Wire What is Magnet Wire? Where to find copper wire Where to get magnet wire Enamelled Copper Wire Solid Copper Wire Essex Wire Wire for Wire Wrapping Transformer Wire Winding Wire Jewelry Making Wire Enamelled Wire Magnetic Coil Wire Copper Wire Price Copper Magnet Wire Solenoid Wire Coil Wire Pickup Wire Motor Wire Inductor Wire Generator Wire Magnet Wire Current What is Litz Wire? Soderon 155 GP/MR-200

Pump Motor Motors For Pump Pool Motors Pump Motors Spa Motors Pool Pump Motors Washer Pump Motors Water Pump Motors Hydraulic Pump Motors Electric Pump Motors Oil Pump Motors Jacuzzi Motors Pump Motors Replacement Swimming Pool Motors Jet Pump Motors C-Face Motors Electricalpowertransformer Main Index

Sales throughout the USA & Internationally
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