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Top 10 3 Step Transformers of 2020 – Consumer Guide & Reviews

Rank No. #1
Transformers Robots in Disguise 3-Step Changers Grimlock Figure
  • 3-Step Changers Grimlock figure
  • Figure converts from robot mode to T-Rex mode and back
  • Converts in 3 speedy steps
  • Includes figure
Rank No. #2
Bluelans 24V to 12V 5V 3V DC-DC Buck Adjustable Step-Down Power Supply Converter Module LCD Power Supply Volt Reducer Regulator Transformer Module Board
  • Supports complete disability output, anti-reverse protection, short circuit protection, anti-backflow protection, charging function and so on
  • High current and low heat, can be used as ordinary buck power supply module, charger and LED constant current driver and charger, which is simple, efficient and practical.
  • It's with LCD display which can display input voltage and output voltage, current, power and display status in a high clear way.
  • Size: 43mm x 21mm x 14mm/1.69" x 0.83" x 0.55" (Approx.),Input Voltage 3.2V - 40V,Output Voltage 1.25V - 35V
  • Widely used for storage battery, power transformers, DIY adjustable regulated power supply, industrial equipment, 5V, 9V, 12V, 28V output, etc
Rank No. #3
1000W ST-Pro Auto Step Up & Step Down Voltage Transformer Converter, Heavy-Duty AC 110/220V Converter with US Standard, Universal, Schuko AC Outlets & DC 5V USB Port by Goldsource [3-Year Warranty]
  • ★EASY START FUNCTION: This premium and highly functional transformer converter has a soft-start circuit is built inside to prevent an inrush current at the starting moment. Home circuit breaker not trip off at the starting moment. It comes with four input voltages selectable: 110V/200V/220V/240V.
  • ★HIGHLY FUNCTIONAL CONVERTER: This CE Certified step-up and step-down AC voltage transformer has the ability to convert from 110V up to 220V or from 200/220/240V down to 110V. (Please note a voltage converter does NOT change the frequency, in another word, what goes in is what comes out, either 50 Hz or 60Hz)
  • ★BEST EFFECTIVE TRANFORMER CONVERTER: Unlike other converters, we have designed this one with 1,000 watts Maximum Load Capacity (MLC), most suitable and cost-effective for devices such as rice cookers, hot water pots, household food mixers, blenders with the Maximum Power Consumption (MPC) between 400 and 750 watts.
  • ★QUALITY STABLE OUTPUT CONSUMPTION: This voltage transformer has 100% loading capacity. It has 4 AC outlets including two 110V US standard, one 220V Universal and one German/French Schuko plus one DC 5V USB which makes it work perfectly well.
  • ★100% SATISFACTION GUARANTEED: As a brand, we believe in quality not quantity! We give instant full refund and free replacement if the product have any problems for using. All our 1000W auto step up and down voltage transformer converter are made to fully work at its best for your comfort & satisfaction. It is certified & we offer you 3-year manufacturer’s limited warranty.
Rank No. #4
ALMOCN 5PCS 5V Regulator Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module
  • Input Voltage is DC 4.5-24V,Output Voltage is integration adjustable and fixed output,back side can choose fiexd output voltage.Adjustable Range is 0.8-17V,fixed voltage (1.8V 2.5V 3.3V 5V 9V 12V).Output Current is 3A (max),actual testing input 12V output 1.5A.
  • High efficiency and super compact size, high frequency and low ripple, stable working performance, wide range of applications, this 12v to 5v converter will be a good component for fixing work.
  • Output integrated adjustable and fixed voltage, you can get fixed output voltage by soldering the pot on the board. If the fixed output voltage is not what you want, you can adjust it by potentiometer.
  • Strong and high quality construction: imported potentiometer and 3A current chip, high current shielded inductors and MLCC solid capacitance with long service life.
  • If there is any question, please feel free to contact us at any time. And we will solve your problem as soon as possible.
Rank No. #5
LIVISN Waterproof DC Voltage Regulator Boost Converter DC 12V Step Up to 24V 3A 72W Power Converter Waterproof Module Transformer for Golf Cart Club Car
  • Waterproof rating: IP67. Operating temperature: -40 °C to +80 °C
  • Low power consumption, high conversion rate over 92-96%.
  • Safe use and better heat dissipation.
  • It has strong adaptability,provided with waterproof,moistureproof and dustproof design.
  • Package included:1pc x Boost Converter.Wide voltage input, built-in over current, over voltage, over temperature, short circuit and other automatic protection functions.
SaleRank No. #6
Voltage Converter 2300W Power Step Down 220V to 110V Universal Travel Adapter Power Converter Power Transformer w/ 3 AC Outlets 3 USB Ports 1 Type-C Charging EU/UK/AU/US/IT/in/South Africa Black
  • ➤【Worldwide Voltage Converter】Our power converter aims at stepping down 220/240V to 110/120V, with an EU plug cable and 5 UK/AU/US/IT/South adapters, you’re free to use or charge your electronics on overseas travel all over the world, no worries about the devices voltage and charging issues anymore while you’re outside US and travel on any countries that rated at 220V
  • ➤【Portable All-in-one Voltage Transformer】 Travel size won’t compromise the efficacy of this converter at all due to our all-in one design, you will get a power converter w/ 3 AC outlets+2 USB ports+1 QC 3.0 port+1 Type-C port, these will satisfy all your simultaneously charging needs, unlike traditional converters which tend to be large & heavy, our special design converter is definitely practical for traveling
  • ➤【Compatible with Various Appliances】Not only support using and charging needs like cellphone, laptop, tablet, hair dryer, straightener, curling Iron, blue-tooth speaker, electric shaver, even for cooking machine, air purifier, rice cooker, electric kettle, vacuum cleaner, hi-fi active speaker, it will work well as long as your device is NOT electronic controlled auto/touch on/off button and under 2300W volts
  • ➤【Safety & Sustainable Travel Converter】Designed with over temperature, overcurrent, overvoltage, short circuit protection and surge protection, plus with quiet dual cooling fans on both sides for heat-reducing, our converter will run under stable condition and provide a security using of your devices, no worry about blow a fuse or knock out hotel power, which is also a security for yourself
  • ➤【Must-have Universal Power Adapter Converter】You go abroad, you need a power transformer for sure unless all your devices are dual voltage. It helps to solve the electronics using problem no matter which country you’re going to, and with our 2-year-limited warranty, it definitely worth a try! Any concern or confusion, please feel free to ask a question or contact, we are more than happy to be of assistance anytime
Rank No. #7
ELC T-5000+ 5000-Watt Voltage Converter Transformer - Step Up/Down - 110V/220V - Circuit Breaker Protection Heavy Duty [3-Years Warranty]
  • Up to 5000 watt maximum capacity, heavy duty step up/down voltage converter transformer (110/120V 220/240V)
  • Note: This converter is designed only for European/Asian 220V (Single Phase), it will not work with American 220 (dual phase)
  • Dual circuit breakers protection for each voltage (120V & 220V) 1 x 110V socket, 1 x Universal 220V socket weight: 21 lbs., Dimensions: 10.25" X 8" X 4.5", CE Certified
  • Max - 5000 watt for 30 minutes Use. For continuous use: 2500W. Make sure you multiply x 2 the wattage of your item and get a transformer bigger than that
  • Warning: we do not recommend for high wattage heat producing items such as coffee maker, expresso machine, toaster & welding equipment etc
Rank No. #8
ACEIRMC 2pcs Buck Converter 12v to 5v 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging (4pcs)
  • buck converter input voltage is DC 9v-36v, output voltage is 5.2V (5V-5.3V available according to your input voltage).
  • Input different voltage will output different power: input DC 9-24V, output 5.2V/6A/30W; input DC 24-32V, output 5.2V/5A/25W; input DC 32-36V, output 5.2V/3.5A/18W.
  • The voltage reducer is with USB interface and quick charge identifying chip, and is compatible for Android and Apple.
  • The step down regulator adopts synchronous rectification scheme to provide wide voltage range, large current and high efficiency.
  • 5A USB Voltage Regulator DC 9V-36V Step Down to DC 5V-5.3V 5.2V 3.5-6A Volt Transformer Power Supply Module for Phone Fast Charging
Rank No. #9
ELC T-5000 5000-Watt Voltage Converter Transformer - Step Up/Down - 110V/220V - Circuit Breaker Protection [3-Years Warranty]
  • Up to 5000 Watt Maximum Capacity, Heavy Duty Step Up/Down Voltage Converter Transformer (110/120V 220/240V)
  • NOTE: This converter is designed only for European/Asian 220V (Single Phase) , it will not Work with American 220 (Dual Phase)
  • Dual Circuit Breakers Protection for Each Voltage (120V & 220V) 2 x 110V Socket, 1 x Universal 220V Socket, Weight: 21 lbs., Dimensions: 10.25" x 8" x 4.5", CE Certified
  • MAX - 5000 Watt for 30 Mins Use. For continuous use: 2500W. Make sure you multiply x2 the wattage of your item and get a transformer bigger than that.
  • WARNING: We do not recommend for high wattage heat producing items such as Coffee Maker, Expresso Machine, Toaster & Welding Equipment ETC
Rank No. #10
Valefod XL6009 DC to DC Boost Converter 3.0-30V to 5-35V Step-up Transformer Power Module, Pack of 6
  • The XL6009 module is a non-isolated step-up voltage converter featuring adjustable output voltage and new generation(XL6009E1 core chip) high-frequency(400KHZ) switching technique, the performance is much better than LM2577.
  • Designed for multiple practical applications that need a boost voltage, such as DIY an output adjustable mobile power, temporarily set up power supply in the outdoor, charge your electronic devices etc.
  • Input Voltage: DC 3V to 30V (optimum working voltage range is 5V to 30V).
  • Output Voltage: DC 5V to 35V (continuously adjustable), maximum output current is 4A.
  • Ultra-compact power module with simple operation. Using a mini screwdriver to step up / down output voltage by turning slotted screw on the blue trimpot, and monitor voltage with multimeter to achieve the expected voltage, clockwise to reduce voltage and counterclockwise to increase voltage. (1 circle means +/- 1V)
Rank No. #11
ROCKSTONE POWER 5000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port - CE Certified [3-Year Warranty]
  • 5000 Watts Heavy Duty Step Up/Down Voltage Transformer Converter. Step Up Voltage from 110-120 Volts to 220-240 Volts. Step Down Voltage from 220-240 Volts to 110-120 Volts.
  • Patented Simultaneous 3-Mode Output: 5V USB Port / 120V USA Output Socket / 220V Universal Output Socket. CE Certified. 3-Year Manufacturer's Limited Warranty. Metal Casing. Full Range Fuse Protection. Full Range Over Current Protection.
  • RockStone Power proudly supports the United States Military since 2001, and have became a proud supplier for Tesla Inc. since 2018. Shipping is available to all Overseas Military APO/FPO/DPO addresses.
  • For safety reasons, it's recommended to use a Voltage Converter/Transformer that's max watts is at least 50% higher than your appliance. For example; 5,000 transformer can be only be used with an appliance that uses up to 3,300 Watts that is to prevent damage from the transformer itself and the appliance being used.
  • Package Contents: Rockstone Power 5000 Watt Heavy Duty Voltage Transformer Converter, Hardwired Heavy Duty Insulated Power Cord with USA Grounded 3-Prong Plug, American to European Grounded Schuko Wall Outlet Plug Adapter, 2 PCS Spare Fuses, and Instruction Manual.
Rank No. #12
Golf CART Voltage Reducer Automatic Buck Boost Converter DC 8V-40V to 12V 3A 36W Step Down Up Regulator Waterproof Module Transformer
  • Input Voltage: 12V/24V/36V nominal, accept(8V-40V) range; Output Voltage: DC 12V 3A 36W
  • Adopt Synchronous Rectification Technology to improve conversion efficiency, Maximum Efficiency:≥95%; Ripple Wave: 50Mv; Starting delay time:≤2S
  • Assembled with smart chip, features Over-current /Over-load /Low-load /Short-circuit /Over-heat intelligent protection
  • Compact aluminium shell with epoxy potting, 100% waterproof, anti-dust, anti-shock protection and better heat dissipation
  • These voltage converters are excellent power transformers, can work safely and reliable in -40°C~80°C range. And all converters are offered 1 year replacement assurance
SaleRank No. #13
BANKEE DC 12V 24V to 5V 3A Converter DC Voltage Reducer Regulator Step Down Buck Converter Power Supply Volt Transformer Module (12V/24V to 5V 3A)
  • Input voltage: 12V/24V step down to 5V. Input range: DC 8V-40V 
  • Output parameter: DC 12V/24V 3A, 15W.
  • High conversion efficiency: Synchronization rectification technology-multiple intelligent protection functions with high conversion efficiency and stability.
  • Protection: Built-in over-load, over-current, over-voltage, over-temperature, and short-circuit protection, and can return to normal conditions in work.
  • Application: Widely used in automotive, electricity, surveillance systems, railway signals, instruments, and meters, LED displays(LED strip, copper led strings), cable TV, etc
Rank No. #14
Transformers Playskool Heroes Rescue Bots Energize Bumblebee Figure (Amazon Exclusive)
  • AS SEEN IN THE TRANSFORMERS RESCUE BOTS TV SERIES: Any Transformers Rescue Bots fan wishes they could race to the rescue alongside Bumblebee, Heatwave, Optimus Prime, and other favorite characters. And they can imagine they are with this Bumblebee figure, inspired by the fan-favorite Bumblebee from the Transformers: Rescue Bots animated TV show
  • ENERGIZE THE EXCITEMENT: Bumblebee is one cool bot. So, how do you make him cooler? You give him an awesome Energize jackhammer, that’s how! In bot mode, the jackhammer fits in his hand, but when in vehicle mode, it attaches to his hood. Either way, kids are going to love pretending to smash through any obstacle
  • 2 MODES FOR TWICE THE FUN: Birds sing, bees buzz, and Transformers convert. These are just facts. A car is a car and a robot is a robot, but a car that turns into a robot . . . well, that’s something special! Your little hero can enjoy twice the fun with 2 modes of play, converting the Rescue Bots Bumblebee figure from a race car to a robot and back again with 1 easy step
  • EASY TO DO: Want to play with a car? You got it! Want to battle with a robot instead? No problem! That’s because this Bumblebee figure, sized right for small hands, has been designed with Easy 2 Do conversion. With just 1 simple step, Bumblebee converts from a car to a robot or a robot to a car
  • GO GREEN: Ships in simple, recyclable packaging that’s easy to open and frustration free
Rank No. #15
9V Voltage Regulator, DROK DC Buck Converter 5V-23V 12V to 0.01-18V 5V Power Supply Step Down Transformer Module, 3A LCD Volt Stabilizer Circuit Board
  • PARAMETER --- input voltage range DC 5v-23v; adjustable output voltage 0.01v-18v, max output current 3A, recommend use of within 2A.
  • VOLTAGE ADJUSTMENT BUTTON ---- support fine adjustment by 0.01v & fast adjustment.
  • LCD DUAL DISPLAY ---- clear LCD screen displays digital volt & current values.
  • PROTECTION ---- input reverse connection protection, protective case kit.
  • ACCURACY ---- 0.01V, 0.01A; high conversion efficiency 95%.
Rank No. #16
Playskool Heroes Transformers Rescue Bots Optimus Prime Action Figure, Ages 3-7 (Amazon Exclusive)
  • WARNING: CHOKING HAZARD – Small parts may be generated. Not for children under 3 years
  • Kids can pretend to roll out with this Optimus Prime figure, inspired by the character from the Transformers: rescue Bots animated TV show
  • Designed with easy 2 Do conversion preschoolers can do, this Optimus Prime figure makes a great gift. With 1 simple step, kids can convert this rescue Bots toy from a robot to a vehicle
  • The fun and oversized Transformers converting robot toy inspires adventurous imaginative play for boys and girls ages 3 and up
Rank No. #17
SMAKN DC/DC Converter 12V Step Down to 3V/3A Power Supply Module
  • All epoxy sealed containers with Waterproof Housing; Non-isolated
  • High efficiency: >96%; Reliable, low heat dissipation max. 40 ℃;
  • With overload / over-current / over / low voltage protection, stable performance.
  • Light compact, convenient to use and transport; Auto recovery
  • Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc
Rank No. #18
Transformers Action Figure
  • Choose your side: Join the mighty Autobots or the destructive Decepticons
  • Most Transformers toys feature awesome weapons and cool converting features
  • Collect cool converting characters from the show Transformers: Robots in Disguise
  • Relive the original adventures with Transformers Generations figures
Rank No. #19
Adjustable Voltage Regulator, DROK DC to DC 5.3V-32V to 1.2V-32V 12V Power Supply Module, 12A LCD Step Down Volt Transformer 160W CC CV Buck Converter Reducer
  • DROK power supply module input voltage range is DC 5.3-32V; output voltage range is DC 1.2-32V, can be arbitrary adjustable; output current can be 8A for long term use, if enhance heat dissipation, it can reach 12A; max output power is 120W, if enhance dissipation, it can reach 160W.
  • LCD Display: the buck converter is designed with LCD, can display input and output voltage, output current and output power; voltage display resolution is 0.05V, current display resolution is 0.005A.
  • Safe Protection: the voltage regulator module is with reverse connection protection at input terminal, reverse connection will not burn; short circuit protection.
  • Application: the volt conversion board can be used as an ordinary buck module with over-current protection; used as a high-power LED constant current driver module; DIY a solar power controller, etc.
  • Button Control: button control output voltage ON / OFF status, and you can set the default output state is ON or OFF of the next time power-on.
Rank No. #20
Transformers Rid Team Combi UlBee Action Figure
  • Transformers: Robots in Disguise Combiner Force Team Combiner Ultra Bee figure
  • 4 figures combine to form Ultra Bee Combiner figure
  • Click to combine figures in 1 easy, awesome step
  • Works with other Crash and Team Combiner figures (each sold separately)
  • Includes Bumblebee figure, Sideswipe figure, Strongarm figure, Grimlock figure, 1 sword accessory, and instructions

Last update on 2021-07-21 / Affiliate links / Images from Amazon Product Advertising API

We’ve made a buying guide of top 10 3 Step Transformers for our consumer to review. The reports above show ratings of the best overal, best cheap 3 Step Transformers to buy in 2020.

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