Variac Transformer Home                          Resources and information on variac transformers are listed. Learn about the different applications and what a variac transformer can do.

3 Phase Variac Transformer                         A 3 phase variac transformer will have 3 windings that are connected in a sequence that will match the incoming power. This will transform the power companies voltage to the level that is needed. 

Variac Transformer Amps                                   is also called current as it is the amount of electric energy that is flowing through the variac transformer. The amps is the amount of electricity that is pulled from the voltage in the line.

Variable Voltage                Learn how to adjust output voltage from 0 to 117 percent of the units input voltage. A variac transformer would be the way to go. 

Variac Wiring                     The inductor on a variac transformer is shaped like a doughnut with wire that is wrapped through the center hole. Due to the resistance of the winding wire, heating can sometimes be present.  
 

Single Phase Variac Transformer                       This type of variac transformer is mainly used on lighting and heating loads. They can either be air cooled or oil cooled.
 

Isolation/Variac Combination                     An isolation/variac combination type of transformer will isolate sensitive equipment from electrical noise and interference from the AC power line. It is used quite often in testing functions.  

Variac Auto Transformer                       This type of transformer will either act like a step-up or a step-down transformer. A variac auto transformer will not provide isolation from any line current.

Isolation/Variac Combination

The isolation/variac combination transformer was basically designed to isolate sensitive equipment from an AC power line that has electrical noise and interference. At the same time the isolation/variac combination provides the variable voltage capabilities. Using just a variac transformer is never an isolation transformer but by combining the two it becomes an isolation/variac combination and will maintain the safety benefits and it becomes a very versatile device.

The people that mainly use isolation/variac combination transformers are engineers, scientists and technicians that work in laboratories that have very sensitive equipment. They generally have both the need for isolated mains supply along with a need for variable output voltage. They use the isolation/variac combination to test many devices that demand different voltages and currents. The electrical engineer will test their devices by applying a steadily increasing voltage from 0 volts to rated voltage of the device they are testing with the isolation/variac combination transformer. If they are using two separate transformers, like an isolation and a variac transformer, it becomes very bulky using two separate transformers.  Therefore, the isolation/variac combination transformer comes in very handy.

Since a plain variac transformer is not isolated by itself, anyone using one has the chance of getting zapped by electrical current if they are not careful. The isolation/variac combination transformer will alleviate this situation. The isolation/variac combination transformer is designed to remove any crud in the line. It will stop digital hash from entering the line and will allow the user to lower the voltage rating. This in turn lowers the noise and any vibration that may occur.

Various isolation/variac combination transformers available:

I/P 125 V, 60 Hz supply voltage & output Variable from 0 to 150 V

Quality isolation/variac combination transformers can be found at a company by the name of TEMCo. Their specialists will assist you in finding the perfect isolation/variac combination transformer for all your needs. TEMCo has been in business since 1968 providing electrical solutions for all that inquire. Contact TEMCo at 1-510-490-2187 or 1-800-613-2290.

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Isolation/Variac Transformer
 

Variac Applications         Some of the most common applications for the variac transformer are listed and reviewed. They are mainly used in quality control testing.

TEMCo Variac Transformers                    TEMCo has been in business since 1968 supplying and manufacturing various brands and models of variac transformers. Quality, performance and reasonable prices is what you will find at TEMCo.

Other Transformer Resources:

Custom Transformers is a unique website that offers information and resources on custom transformers.

Power Transformers is where you can explore the different types of power transformers on the market today.

TEMCo Step-Up Transformers are manufactured with the highest quality materials at a cost effective price.