Instant transfer from your bank account if eligible. Staco energy offers variable transformers in benchtop and panelmount models. This machine is widely applied in the electrical experiment, electronic circuit experiment, ect. Ten uses for an autotransformer, or variac august 1, 2014 august 21. Staco energy products distributor digikey electronics. Digital readouts are provided for output voltage and load amperage. In poor shape but workinggood for diy project product details. Since 1937, staco energy products has been a pioneer in design and construction of both standard and specialized variable transformers, ac voltage control, sophisticated power conditioners and ups equipment. Staco software downloads staco energy products software for netagent, sentry ii and upsilon power management systems.
Repair of a medium sized variable transformer variac. Replacement brushes may be ordered either from the factory directly or from any of our qualified distributors. It is a single phase line voltage regulator comprised of a motor driven variable transformer, a buckboost fixed ratio transformer, a solid state electronic control unit and associated front panel controls and voltmeter which displays the regulated output voltage. Using the variac in an overload state may also cause excessive wear on the brush. Tap switch 120600 volt, up to 500 kva electronic, microprocessor controlled design to work in dusty and damp environments protecting dynamic loads from voltage sags, surges, spikes, transients, and rfi variations through high speed semiconductor switching with 12 cycle full correction time. A performing musician may run into poor voltage at a. Buy your 1520 from an authorized staco energy products distributor. As with most variable autotransformers, substantial overloads are tolerated for short time periods without damage and good regulation is maintained. This shopping feature will continue to load items when the enter key is pressed. Buy your 201 from an authorized staco energy products distributor. Variac literature variac cross reference identifies suitable replacements for older and obsolete variable transformers.
Contact variac regulator belongs to a small type of power supply machine with capacity 0. Business listings of carbon brushes, electric motor brushes manufacturers, suppliers and exporters in delhi. How to do if i want to maintenance a variac transformer quora. A basic staco variable transformer consists of a single layer. Variac is a generic trade name for a variable transformer. In an industry where companies come and go, staco energy products co. A variable transformer used for voltage control in laboratory or industrial environments. Ise web store provides pricing for some of our more popular smaller variac transformers. This material has a high thermal transfer characteristic so that it dissipates heat from the brush contact area. Jun 29, 2015 thought id share my method of extending the life of carbon brushes on berco variacs via a very simple method of filing the shoulder back on the carbon brush to allow it to protrude further from. A performing musician may run into poor voltage at a venue. This is a very common type of transformer used in a variety of applications. These variable transformers have many industrial and laboratory applications as basic components to control voltage, current, power, heat, speed, light and electromechanical force. Year round best sellers sale specials buy best sellers staco energy transformers staco 3pn1010b staco variable transformer.
In its simplest form, the scariac is just a glorified version of two wires in a bucket of water, but its actually one of the cheapest power controllers you can make. I got one working like a charm, but the second one only works when the variac is turned past 70% or so, im pretty sure its the variac, since outside of that once its turned past that spot it works perfectly, and it definitely has power, its not a slow climb to normal, its either good or bad. An autotransformer is an electrical transformer with only one winding. How to do if i want to maintenance a variac transformer. Mixing water and electricity is extremely risky and potentially lethal, yet thats exactly what i did with the scariac. Thought id share my method of extending the life of carbon brushes on berco variacs via a very simple method of filing the shoulder back on the carbon brush to allow it to protrude further from. With power off, insert a piece of fine garnet paper or crocus cloth between the brush and the commutator surface with the abrasive side toward the brush. For use with, 1010 series variable transformer, 1010b series variable transformer. A carbon brush, connected to an output terminal, is rotated over the length of a precisionground, precious metalplated, commutator track to tap off voltage at any turn from zero volts to the maximum output voltage of the winding. Individual life expectancies of components can vary, reducing. The auto greek for self prefix refers to the single coil acting alone, not to any kind of automatic mechanism. Click to contact ise with questions or models not listed. Staco energy l1010v variable transformer variac, fully.
In an autotransformer, portions of the same winding act as both the primary winding and secondary winding sides of the transformer. Frequencies to 2000 hz can be accommodated on some versions. Replacement brushes it is normal for variac brushes to wear with time, especially if frequent adjustments to the output are made. If the brush is getting hot enough to melt a hitemp epoxy, then variac load was excessive and has been used inappropriately. Should this become necessary, it is essential that a new or reinstalled brush be properly seated. George leger, the circuit specialists tech guru, demonstrates how to replace the brushes inside a tdgc22 variac.
Getting the last millimeter out of your variac brushes. The variac is rated for a 10 amp fuse and were using a 8 amp one. How to make the scariac a poor mans variable power controller. Buy staco energy products 8080123s online at newark. I have a variac with the carbon brush nearly at the end of its life. Unfollow staco variable transformer to stop getting updates on your ebay feed. Buy your 8080123s from an authorized staco energy products distributor. One replacement contact brush for our tdgc22 variac. Variac brushes are a vital component of variable transformers, commonly known by the trade name variac. Brand new in the box staco avr12057br smooths out flucuating, unstable voltage. Ten uses for an autotransformer, or variac simply smarter.
Variac brushes are one of the components of a variac that defines its flexibility. Special units for voltages to vac and amps are available. A basic staco energy variable transformer consists of a singlelayer. A basic staco variable transformer consists of a copper winding on a toroidal core of laminated, grainoriented, silicon steel. The test set is a lab bench tool that allows consistent and safe testing of tube amplifiers or any recently repaired equipment the test set has the following features 0250 vac variac to set the line voltage presented to the amplifier.
Getting the last millimeter out of your variac brushes youtube. Is there any reason i could not remove the stub of the old brush, from the brass holder, and replace it with a new round carbon brush. Variac drawings provides detailed mechanical and electrical drawings of our products when our part number is known. Power conversions variacs are able to convert common domestic mains voltage bands that are in use across the world.
In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. The transformers output voltage is determined by the area of the brush that is in contact with the transformers windings. Adjustavolt variable transformer model 1500b2 made in dayton, ohio. Power transmission and distribution variacs ensure that voltage at the beginning of the power distribution line is equivalent to the voltage at the end of the line. Orders placed on our website will ship the same business day if ordered by 3pm mst. Variable autotransformers, or variacs, are handy, inexpensive devices used to adjust the ac voltage for electronic devices and lamps.
It would be nice to have a nos replacement but that probably wont happen. A technician will use it to safely monitor equipments response to ac power. Jan 19, 2014 its my opinion that a quality variac brush wont get hot enough to melt many twopart epoxies, such as ones found at auto supply stores. Variable transformer brushes general radio, powerstat, staco energy products, superior electric, variac, weschler back to brushes main page. We will respond promptly and get you the answers you need. This is the variation in the output voltage from noload to fullload current. Staco equipment is built for years of reliable performance under the most demanding conditions. Selecting the staco variable transformer best suited for.
Find here carbon brushes, electric motor brushes suppliers, manufacturers, wholesalers, traders with carbon brushes prices for buying. Antique radio forums view topic variac brush replacement. Discussion in general technical questions and answers started by kd0cac. In contrast, an ordinary transformer has separate primary and secondary. Standard models include input voltages from 120vac to 480vac. George ledger from our tech support department demonstrates how to replace the brushes in a variac. Variac variable transformers include a full range of single an three phase models.
It can also be used to control both sides of a 240vac circuit, for 0280v input to a 3000va load. Staco energys variable transformers with a high temperature foundation. Repair of a medium sized variable transformer variac note. Products carbon brush for motor variable transformer carbon brush. The 8 was suggested to avoid damaging our heating element. How to replace the brushes in a csi variac youtube.
Ac volmeter 0150 vac ac ammeter 05 amperes current limiting via 100watt light bulb. Featuring dual variacs and variac cores by powerstat and general radio. Staco variable autotransformer 3pn1010 0140 volts 10 amps. Home shop by brand and category information we are an authorized distributor for all brands in our store.
Im using a variac to control voltage on a heating element and were having issues with the fuse blowing. Jul 23, 2012 george leger, the circuit specialists tech guru, demonstrates how to replace the brushes inside a tdgc22 variac. How to make the scariac a poor mans variable power. Since 1937, staco energy products has been a pioneer in design and construction of both standard and specialized variable transformers, ac voltage control, sophisticated power conditioners and.