Since 1972
Protection Doesn't Cost ... It Pays ! . .. Ancient Abyssinian Proverb

VARIACS <> VARIABLE TRANSFORMERS
Industrial Adjustable Variable Voltage Autotransformers

	Precise, continuous voltage control Autotransformer design gives optional voltage boost 60 Hz and 50/60 Hz Models available Bench-Top and Panel-Mount Models Motorized Models can be factory ordered 120 Volt and 240 Volt Models Contact us for other Voltage Models Now Available !  400 Hz Variacs ... See 'em Here Check Out ... 3-Phase Variable Transformers
Typical Bench Top Models 120 Volt Models 240 Volt Models Some Models in Rectangular Metal Cases	Check Out Our Variable Transformer  Winter Sale Specials	Typical Panel Mount Models 120 Volt Models 240 Volt Models

Variable Transformers, often generically referred to as "Variacs", are widely used when adjustable voltages are required for quality control testing, electronic equipment burn-in, life-tests, low voltage performance evaluation, D.C. rectifier/regulator analysis or other industrial and engineering applications.

Check out our Variac / Variable Transformer Application Notes

Printer Friendly Variable Transformer pages

Panel mount units are often incorporated into test equipment or permanent installation

Bench Top Variable Transformers, employing a AC power line cord and electrical outlet, can be conveniently moved within the engineering laboratory or equipment service area to provide adjustable voltage.

Bench Top Variacs are widely used in Service Shops, Industrial & Academic Laboratories, Engineering Design Facilities, Manufacturing Operations and Field Installation Teams.  Inherent portability makes these units valuable in instances where actual operational parameters need to be ascertained.

Bench Top Models - - 50/60 Hertz
STEEL CASE, CORD / PLUG, OUTLET RECEPTACLE
. . .  CONSULT TABLE FOR PLUG / SOCKET

Don't Miss Winter Sale - - Big Discounts on Several Popular Variable Transformer Models

New !! Meter Options for Bench Top Variable Transformers

Prefer Fax or e-mail ? ........ Print out Order Form

Bench Top Models - - 60 Hertz only
STEEL CASE, CORD / PLUG, OUTLET RECEPTACLE
- - - 120 Volt Models - - NEMA 5-15 Plug & Socket
- - - 240 Volt Models - - Consult Table for Plug / Socket

New !! Meter Options for Bench Top Variable Transformers

Prefer Fax or e-mail ? ........ Print out Order Form

Panel Mount Variacs are utilized in permanent installations and equipment when operational or performance points need to be varied.  Panel Mount variacs are mounted both on external panels for operational accessibility and internally for system setup adjustments. 

Panel Mount Models - - 50/60 Hertz
For hardwired, permanent installation
Higher Frequency Applications? ? Link to Multi-Frequency Variable Transformers to check out operating limits for these units

Don't Miss Winter Sale - - Big Discounts on Popular Variable Transformer Models

Printer Friendly Variable Transformer pages

Prefer Fax or e-mail ? ........ Print out Order Form

New !! Meter Options for Panel Mount Variable Transformers

Panel Mount Models - - 60 Hertz only
For hardwired, permanent installation

Prefer Fax or e-mail ? ........ Print out Order Form

Check Out
Our Variable Transformer
 Winter Sale Specials

Meter Options for Bench Top Variable Transformers

400 Hz Variacs - -
contact Electronic Specialists to discuss requirements and availability
delivery time is usually 3 to 6 weeks After Receipt of Order
View details on available 400 Hz Variac models

Three-Phase Models - -
We have cataloged the most popular of our 3-Phase Variable Transformers . . See them Here
contact Electronic Specialists to discuss requirements and availability
delivery time is usually 4 to 6 weeks After Receipt of Order and Payment
Payment in full required at time of order, as these are Specially Constructed

Motorized Models - -
contact Electronic Specialists to discuss requirements and availability
delivery time is usually 4 to 6 weeks After Receipt of Order and Payment
Payment in full required at time of order, as these are Specially Constructed

Check Out Electronic Specialists Variac controlled voltage regulator and isolation transformer
Have a look at our Precision, Variac Voltage Regulator  packages
New ! Stepper Motor Variac Regulator Controller

FREE Variac / Variable Transformer Tutorial More Insight on Variable Transformers & Applications

View our 400 Hz Variac units

Special Applications - Multiple Frequency Operation

Some Engineering, Test and Maintenance facilities require Variable Transformers capable of handling 50, 60 and 400 Hz power.  Link to Multi-Frequency Variable Transformers to check out available units.

Variac is a Registered Trademark of Power Designs / Variac

>< >< >< ><

Suggest This Page to a Colleague <> Click Here

?? Answers to Hundreds of Hi-Tech Equipment Protection Questions - Click Here

View a recent copy of our Newsletter

Other Popular Pages on this site: Check Them Out ! !
LapTop <> Travel <> Modem/Phone <> Automation

STORM  WARNING !!

Surges, Spikes and Interference Damage  
play no Favorites ! !

Studies Show ...................

Winter Storms Cause More 
Wild Power, phone line outages, surges, spikes and interference
than Summer Storms

On the other hand, There are more Summer Storms

Winter Storm Spherics cause up to 50% as much damage as Summer Lightning Storms

On the other hand, WHY SUFFER ANY STORM DAMAGE ?

Now is the Best Time to Protect YOUR Valuable Equipment

Discover the Security offered by . . . . .
Electronic Specialists Professionally Engineered products for .....
. . . . your factory computerized production equipment and automated machinery
. . . . office computers, internet, network, intranet, communication and sound systems
. . . . your home computer, modem, phones and entertainment center

Visit our other great Equipment Protection Departments........
(Check the many categories in TABLE BELOW)
Discover High Performance protection solutions for your factory / office / home

Oh Yeah !  Don't forget to check out our FREE stuff

Ferroresonant Voltage Regulators Precision Variac Voltage Regulators ....... Stepper Motor Voltage Regulators ......Hi-Power Voltage Regulators	Dial Up Modem Speed-up & Telecommunications Protection Systems RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45 Screw Terminals <>  Wire-In <> DSL	Cable Modems )x4d( Speed-up, Isolation, Intermittent Cable Sync & Protectors Systems
New! Regulator - Dual Voltage Voltage Regulation - extends UPS operating Voltage Range AC Power Protection   ...... Discussion & Over View	Software .... Engineering, Photography, Utilities Books .... Technical, Computer Ultra High Current Source Regulated High Current Source Ultra Hi Current Ammeter	Networks,  Data Line , Controller  Protection RS-232, RS232, RS-422, RS422, RS-485, RS485 DB-9, DB9, DB-15, DB15, DB-25, DB25, Wire-in RJ-11, RJ11, RJ-45, RJ45, 10Base-T, 100Base-T Automation,  Instrumentation Protectors
AC Power Line Protection  220-250 Volts ...... Commercial ... Industrial and .. Laboratory & Basic Grades  NEMA  6-15, 615, 6-20, 620	Multiple circuit    Relay Rack Mount Modem / Phone / Telco Protection	Networks, Data Line, Controller Banks  Relay Rack Mount--Multiple Line Systems Process Control and Automation
Direct Plug AC Power Protection with built in Modem Protector	Dual Function - Direct Plug AC Power and Modem Protectors	Dual Function - Direct Plug AC Power and Network Protectors
AC Power Line Protection 120 Volts ...... Commercial ... Industrial, .. Laboratory & Basic Grades   International too ! NEMA 5-15, 515, 5-20, 520	Phone System Protection and Interference Control Modular plugs, sockets RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45	Audio-Video System Protection Cameras, Monitors, Displays, Amplifiers 50 / 75 ohm, RG-6, RG6, RG-58, RG58, RG-59 RG59, RG-62, RG62, RCA, PL-259, BNC, UHF Video Guard Hum Buckers
Wire-in AC Power Line Filter-Suppressor Wire Leads <> Screw Terminals Solder Lugs  <> Push-on Tabs Retrofit and OEM applications	DIN RAIL Mount Modem - Phone Line Protector NetWorks Protector  RJ-11, RJ11, RJ-21, RJ21, RJ-45, RJ45 DB-9, DB9, DB-15, DB15, DB-25, DB25 <>Screw Terminals <>  Wire-In	Video <> Monitors & Displays <> Surveillance   Video Interference Choke Video Guard Hum Buckers
Extreme Duty Motor and Controller Suppressors <> single phase  <> 2-phase  <> 3-phase	Twist-Lock® * Filter-Suppressors for NEMA L5-15, L5-20, L5-30, L515, L520, L530 L6-15, L6-20, L6-30, L615, L620, L630 L10-, L11-, L14-, L15-, 15, 20, 30 * Twist-Lock is a registered trademark of Hubbell Incorporated	Relay Rack Mount, Multiple Circuit Video Protectors
Variable Voltage  ....... Regulators  ....... Isolation Transformers ....... Variacs  ....... 400 Hz Variacs	Industrial & Copier Hi-Current Filter-Suppressors AC Hi Power Protection NEMA 14-20, 1420, 14-30, 1430, 14-50, 1450	Cable Modem <> Speed-up, Isolation & Protection System
Ground Loop Control ...... Voltage Regulators ...... Isolation Transformers ...... Cable TV / Cable Modem Isolators	Application Notes ...... Dozens of Practical Money Saving Tips	Cable Isolators Audio/Video Ground Loop Eliminator <> F-connector  <> BNC-Video Guard
Isolation Devices  ....... Transformers  ....... Isolators-Filters	Pneumatic Interrupters * Power Shutdown Pressure <> Vacuum Switches	Surveillance <> Security Monitors /  Displays / Video Protectors Video Guard Hum Buckers
New ! ! AC Power Line Interrupters Power Shut Down	Power Transformers ...... Regulators ...... Isolation ...... Autotransformer	Power Conditioners ...... Regulators ...... Isolation Transformers
New ! ! AC Power Line ..... Voltage Converters ,.... Voltage Converter Regulators ..... Voltage Converter Plug Adapter Strips ..... Universal AC Plug Adapters	Travel Adapters .... Phone RJ-11 Adapters .... AC Power Plug Adapter Strips .... AC Power Plug Adapters	Lap Tops ..... Laptop Phone Line Protector ..... Laptop AC Power Protector
Variable / Adjustable Transformers ....... Variacs ....... 3-Phase Variable Transformers ....... 400 Hz Variacs ....... 400 / 60 / 50Hz Variable Transformers ....... Stepper Motor Voltage Regulators	View Custom Design Transformers Ultra High Current Source Regulated High Current Source Ultra Hi Current Ammeter	Application Guide Cross Reference  - - Locate Your Problem   - - - - - Find a Fix !! We Now Offer Software Check 1,000's of Books Boost PC Performance !
Frequency Converters ...... Solid State <> to 5 KVA ...... Motor-Gen & Solid State .......... 5KVA to 500 KVA ....... Rotary Converters	Satellite .....Protection Systems             .....Power Supplies .....Industrial .....Commercial	Complete Subject and Product Listing
SureTest   Electrical Circuit Analyzer <> Harmonics  <> Ground Voltage & Noise <> Load Voltage Drop  <> Ground Impedance	Can't Find What You Need ? Look Here ! or Check our Search Engine Catalog Sheets - ........  Down Load Here	Why the Professionals buy Electronic Specialists Protection Products
Complete Subject and Product Listing	Free Tutorial - Equipment Protection	Complete Product index
Press Releases	Check Out - - - - Free Stuff	Product Application Notes
Check out complete Site Map	Learn What "Everybody " Knows - - - - or should Know ! !	Why you need Hi-Performance Protection
Save !! Surplus from Production	Electronic Specialists Home Page	About Electronic Specialists
Frequently Asked Questions <> with dozens of Answers		Check our Search Engine

Electronic Specialists regularly supplies Regulation, Suppression and Protection Products
for 100, 110, 115, 117, 120, 125/250, 120/208, 220/380, 277/480 Volts
single, dual and 3-phase systems 

FREE Tutorial
($1,200 Value)
Industrial Electronics - - - - - -  Friend or Foe ??
We reveal why your Hi Tech Stuff sometimes becomes downright unfriendly --
and what you can do about it
Discover How to Get Maximum Performance from Your System