The Best Variac For Sale of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Variac For Sale of 2025. Check our ranking below.
2,949 Reviews Scanned
- a variable AC input to a transformer input DC bridge rectifier to produce a variable output
- Max. 500VA,Input Voltage: AC 110V/60Hz ,Output Voltage: AC 0-130V/60Hz
- This variable transformer is the perfect speed controller. The speed is infinitely variable, and because a transformer doesn't chop up the AC waveform like electronic speed controllers do, there's no noise, humming, etc.
- In order to purchase the right variable transformer, it is critical that you know the amp usage by your electronic device. It is always best to be conservative otherwise you risk destroying the variac and it can be very dangerous. For example, if your device requires 5 amp, buy the variac with up to 10 amp. A rating of 500VA means that at 100volt, the unit can sustain at maximum 5amp.
- Using it for Guitar Amp ("Brown-Sound") and for controlling a transformer for Lichtenberg wood burning
- On/Off Power Switch(Lighted),20A fuse & power cord.
- Enclosed, non-isolated, adjustable transformer, with Output Volt Meter.
- Built-in copper coil, material quality, more secure and durable.
- Contact voltage regulator, wide voltage range (0-130V).
- Suit for Motor Speed control,Label Printing Machine,EE Labs,Test for Railroad Switching, Power Supplies, Satellite,Equipment,Telecommunication Equipment.
- - Adjustable transformer, Max.500VA, Input Voltage: AC 110V/60Hz, Output Voltage(Variable): AC 0-130V/60Hz
- - Replaceable 5A Fuses (Extra 4 for replacement), Overload Protection, with Output Voltmeter
- - Built-in copper coil, material quality, more secure and durable. The Core Components of the Transformer Are Made of Environmentally Friendly Materials. It is Odorless and Noise Free.
- - What You Get: A 500VA Variable Transformer with U.S. Standard Plug, 4 Extern Replaceable 5A Fuses, A Manual.
- - Suit for Motor Speed control, Label Printing Machine, EE Labs, Test for Railroad Switching, Power Supplies, Satellite, Equipment, Telecommunication Equipment.
- Variac Transformer: 3000VA variable voltage regulator input voltage AC 110V, 60HZ. Variac transformer is a contact voltage regulator with wide voltage range (0-130V). With output volt meter and 30A fuse.
- Autotransformer Specification: Model: TDGC-3KVA; Capacity: 3KVA; Input voltage: AC 110V, 60Hz; Output voltage: AC 0-130V, 60Hz; Max output: 30 Amps; Condition temperature: <60℃.
- Exquisite Rotating Handle: The autotransformer with a exquisite rotating handle, comfortable grip and flexible operation, easy to control output voltage what you need. High efficiency with no waveform distortion.
- High Quality: The auto transformer is built-in copper coil with high quality material, and with thermal grid design is more easy let the machine cool, more security, reliability and durability. Over-voltage protection.
- Contact Voltage Regulator: This variac transformer be widely used in motor speed control, label printing machine, EE labs, test for railroad switching, power supplies, satellite, equipment, telecommunication equipment.
- ♛ 【Specification】Model: TDGC-3KVA;Material: Iron (shell), copper coil;Capacity: 3KVA;Input voltage: AC 110V, 60Hz;Output voltage: AC 0-130V, 60Hz;Max output: 30 Amps;Plug type: US Plug;Dielectric strength: 1500 V/min.
- ♛ 【0-130V Adjustable】 Metal instrument panel for clear reading, no fading, no word drop and long time use.Voltage can be adjusted from 0 to 130V.
- ♛ 【Built-in Copper Coil】Built-in pure copper coil, the benchtop power supply is of high quality, more secure and durable so as to achieve high efficiency and with no waveform distortion.
- ♛ 【Clear LCD Screen】Current voltage is displayed on the LCD panel and it can accurately monitor the voltage you adjust.
- ♛ 【Wide Application】Suit for motor speed control,label printing machine,ee labs,test for railroad switching, power supplies, satellite,equipment,telecommunication equipment.
Last update on 2025-07-04 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: Why to use a Variac?
A: Variable autotransformers, or variacs, are handy, inexpensive devices used to adjust the AC voltage for electronic devices and lamps. A technician will use it to safely monitor equipment’s response to AC power. A performing musician may run into poor voltage at a venue; plugging a guitar amp into a variac will compensate for this.
Q: Who’s using a Variac?
A: Why Use a Variac? The line voltage in American homes is a nominal 120 volts AC, but a variac lets you adjust that voltage up or down (usually, down) for various purposes. Use 1: Taking Accurate Voltage Measurements. If you restore vintage radios or TVs, you’ll notice that schematic diagrams usually contain voltage readings.
Q: What is the use of variac?
A: Variacs are also used in experiments and testing to simulate various voltage and line conditions. Electrical equipment designed for a voltage other than the 120V or 240V supplied domestically can be powered at the intended voltage level with a variac.
Q: What is the difference between a Variac and a rheostat?
A: A rheostat is just a variable resistor which will limit the current (and hence the voltage) at the load. It will get very hot and is not efficient. A variac is a variable voltage transformer. It has one winding, usually on a large toroidal core.