TEMCo Standard and Custom Variac Transformer

TEMCo is a Variac 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 Variac Transformers.


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

Variac

Quality Built Standard and Custom Variac Models
Your search for high quality, obscure, hard to find, or standard power variac models is over!

Lowest Prices for Quality Variacs - 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

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P R O D U C T S
O F F E R E D

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 Variac Transformer Manufacturer Offering Top Quality at Wholesale Prices

Variac

TEMCo caries a wider range of models, brands and types of variac and offers them a great low wholesale prices. 

Call Our Variac Specialists Today!

TEMCo has experience handling and understanding a wide range of variac applications and can assist you in choosing a make and model to bet fit your need.  Call our variac specialists today at 510-490-2187 for assistance in choosing the correct model to meet your need.
 

About Variac Use and Common Application

Variac, or variable voltage transformers, are not widely known or understood, but are fairly common throughout industry.  Variacs are used to provide a voltage-adjustable source of AC electricity. Usually they are plugged into a wall outlet, and have a knob-controlled output that can range from 0 volts to about 140 VAC, depending on how the winding is connected.  Variacs do not provide isolation from the wall outlet so they are not usually suitable for directly powering low-voltage devices on their own.  Common variac applications are tube audio for powering experimental circuits and for equipment testing and repair, and are not usually used as a permanent source of voltage -shifted power.

Common Variac Applications

  • Electronic service departments us a variac to check out equipment with low and high operating voltages.
     

  • Engineering departments use variacs to check designs and assure new products operate with expected input power variations.
     

  • Variacs are used in engineering and industrial high current generator control
     

  • Quality control testing, a variac is used to test electronic equipment for burn-in and life-tests
     

  • Industrial motor speed control

Types Of Variac

There are two of the most common types of variac that are typically seen, the bench models and the open frame types.  The bench model contains the winding in a ventilated metal shield, with the control knob on top. The variac sits on the bench top like a soda can sits on a counter top. It has an on/off switch, a fuse, one or more AC outlets, a line cord and sometimes a current or voltage meter. The open frame types are intended for panel mounting in equipment racks or as a part of some larger piece of equipment.  Electrical connections and the inductor are exposed, but the operating principles are the same.  Variacs are designed for a specific input voltage and frequency, and will not work well with other inputs. Only the output is intended to be variable. 

How a Variac Works

Variacs work as tapped inductors, where the "tap" is a conductive slider that moves along the length of the inductor. The inductor is shaped like a doughnut, or toroidal transformer with wire wrapped through the center hole and around the toroid.  A single layer of enameled covered magnet wire is tightly wound upon the core. Each end of the winding is securely fastened and the entire winding is lacquered locking the winding to the core.  The slider is an arm equipped with a carbon contact that rotates on an axle located through the doughnut hole or the axis of the toroid,  The enamel insulation of the winding wire is removed where the carbon contact touches the winding, so that the contact forms a circuit through part of the windings.

Variacs divide voltage by dividing the impedance between the inputs into two parts. The fraction of the divided input impedance connected to the output determines the output voltage.  Using a variac, almost all the power consumed is delivered to the load connected to the output.  With a variac there is some heating due to the resistance of the winding wire, and the magnetic coupling between the input and output is far from being perfect.   But a variac is much more efficient than one might expect

Call TEMCo - Your Variac Specialists

 *Custom Variac 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.

Variac

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








Variacs

Variac Transformer







Variac 1

Variac Transformer Solution

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 variac information. Variac 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
info@temcotransformer.com
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.



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transformer guide
Small kVA 3 Phase Transformers Guide

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