What Are Low Voltage Transformers?

Low voltage transformers are devices that provide power to various forms of outdoor lighting, such as recessed lights and patio lights. These transformers provide constant power to your lighting options by transforming the standard voltage of a home power supply into the lower wattage required by many outdoor lights. Since most forms of outdoor lighting do not operate on the same line voltage supply as other kinds of home lighting, such as a standing or desk lamp, a low voltage transformer allows your outdoor lights to get the kind of power they need. Many forms of low voltage transformers include timer options so that your outdoor lighting of choice kicks on automatically without you having to worry about manually turning it on and off.

When choosing a low voltage transformer, make sure to take into account the total wattage of power needed for your lights. If you have six lights that require fifty watts each, you need a low voltage transformer that can provide at least 300 watts of power, if not more. A good rule of thumb is to make sure your low voltage transformer has 20% more wattage available than the lights plugged into it. This gives the transformer a bit of leeway and can help make sure your lights get an adequate amount of power without overdrawing your transformer.

Here are some of the different kinds of low voltage transformers and how they are used.

Best Low Voltage Transformers For The Money

Here are some of the better examples of low voltage transformers available to buy:

SaleBestseller No. 1
LightingWill 10pcs/Pack Strip Wire Solderless Snap Down 2Conductor LED Strip Connector for 10mm Wide 5050 5630 Single Color Flex LED Strips
179 Reviews
LightingWill 10pcs/Pack Strip Wire Solderless Snap Down 2Conductor LED Strip Connector for 10mm Wide 5050 5630 Single Color Flex LED Strips
  • 2 pin connector for 10mm wide SMD5050 5630 single color LED strip
  • Working Condition: Can be able to stand up to 4A current and 0-24V voltage; Heat resistance level from -20 ~ 100 degree C.
  • One end with clip to strip, the other with wires as lead; Solderless quick snap down
  • Compatible with both waterproof and non-waterproof light strips (Please peel off silicon on the surface around soldering line area when install waterproof strips )
  • Package includes: 10x 2 pin connectors for 10mm SMD5050 5630 single color LED strip lights. Please search B01DM7GXIA on Amazon for 4 pin 10mm 5050 RGB strip connectors; Search B01DM7F052 for 8mm 3528 2835 LED strips.
SaleBestseller No. 2
HitLights 24 Watt (2 Amp) 12 Volt DC LED Light Strip Power Supply - UL-Listed, 110V AC to 12V DC Transformer - Driver for LED Tape Light and Other Low Voltage Devices (Security Systems, Cameras, and More)
486 Reviews
HitLights 24 Watt (2 Amp) 12 Volt DC LED Light Strip Power Supply - UL-Listed, 110V AC to 12V DC Transformer - Driver for LED Tape Light and Other Low Voltage Devices (Security Systems, Cameras, and More)
  • 12 VOLTS DC OUTPUT SUITABLE FOR LED STRIP LIGHTS and other low voltage devices such as security cameras audio and video gear and more. Ideal for LED installations in living rooms shelving lighted cabinets toe-kicks and more
  • PLUGS DIRECTLY INTO YOUR WALL OUTLET no hardwiring no soldering no electrician or electrical experience required. Includes output cable with a standard 5.5 x 2.1mm DC jack positive tip for connecting to your strip controller or dimmer
  • USE ANYWHERE - Great for a variety of indoor / interior uses including undercabinet lighting in kitchens ambient accent lighting in bedrooms lighting toekicks in bathrooms or adding backlighting to displays decorations or book shelves
  • RATED FOR 24 WATTS / 2A - Enough power to run one roll sixteen feet of 300 LED 3528 LED strip. Dimmable with 12-volt single color PWM dimmers and compatible with RGB controllers
  • HITLIGHTS QUALITY UL-LISTED. Backed by a two year warranty from HitLights for peace of mind. Contact our US-based customer service team at any time for no-hassle troubleshooting and replacement or for any questions about purchasing or installation
Bestseller No. 3
LEDwholesalers 12 Volt DC Waterpoof LED Power Suppply Driver Transformer with 3-Prong Plug, 30W, 3207
910 Reviews
LEDwholesalers 12 Volt DC Waterpoof LED Power Suppply Driver Transformer with 3-Prong Plug, 30W, 3207
  • IP68 waterproof rating
  • Converts AC voltage to 12V DC
  • Wire leads and 3-prong plug for easy connections
  • Automatic thermal & overload cut-off, short circuit protection
  • Efficient, long life, stable, and reliable
Bestseller No. 4
LET-75 12V AC Class 2 Electronic Remote Transformer by Lightech
187 Reviews
LET-75 12V AC Class 2 Electronic Remote Transformer by Lightech
  • Max 75 watt 12 volt AC electronic transformer
  • Class 2 remote transformer
  • Input: 120 Volts, 60Hz, 0.635 Amps
  • Output max load: 11.7 Volts, 40 kHz, 6.35 Amps
  • Thermal auto reset 125c switch; UL listed
Bestseller No. 5
LED Driver 60 Watts Waterproof IP67 Power Supply Transformer Adapter 100V-265V AC to 12V DC Low Voltage Output with 3-Prong Plug 3.3 Feet Cable for LED Light, Computer Project, Outdoor Light
17 Reviews
LED Driver 60 Watts Waterproof IP67 Power Supply Transformer Adapter 100V-265V AC to 12V DC Low Voltage Output with 3-Prong Plug 3.3 Feet Cable for LED Light, Computer Project, Outdoor Light
  • The Model of LED Driver:Input: 100-265V AC 47-63HZ. Output: 12V DC 5A 60W
  • Automatic protection for Short circuit / overload / over voltage / over current / over temperature.Protection type: Hiccup mode, auto-recovery after fault condition is removed
  • Wide Range of LED Power Supply : Suitable for LED strip lights, led light bulbs ,Computer Project,Industrial,Outdoor Light and any 12V DC led lights
  • 100% Waterproof IP67 protect for outdoor use.Aluminum metal housing, easy for heat dissipation and ensure stability
  • High quality with 2 year warranty.LED transformer certification: IP67,CE,ROHS SELV etc
SaleBestseller No. 6
Armacost Lighting 840240 LED Power Supply Dimmable Driver, 24 Watt
44 Reviews
Armacost Lighting 840240 LED Power Supply Dimmable Driver, 24 Watt
  • Provides smooth, full range flicker-free dimming for 12-volt LED Lighting such as LED strips, modules, light bars, puck and other LED accent lights
  • Compatible with all dimmers and higher end Lighting control systems, also compatible with 12-volt, low-voltage LED dimmers and Color controllers
  • No minimum Lighting load required for wide range dimming, no de-rating is required; load up to 100% of the model's 24 watt rated capacity
  • Input Voltage: 100-120v AC 50/60Hz, λ=0.65C, output Voltage: 12V DC constant Voltage, 24 watts, 2a max
  • ETL listed, complies to UL standard 1310 and 8750, certified to Canada CSA standard C22.2 no. 223-M91 and C22.2 no. 250.13, complies with FCC part 15B
SaleBestseller No. 7
Armacost Lighting 840450 45-Watt LED Power Supply Dimmable Driver,
44 Reviews
Armacost Lighting 840450 45-Watt LED Power Supply Dimmable Driver,
  • Provides smooth, full range flicker-free dimming for 12-volt LED Lighting such as LED strips, modules, light bars, puck and other LED accent lights
  • Compatible with all dimmers and higher end Lighting control systems, also compatible with 12-volt, low-voltage LED dimmers and Color controllers
  • No minimum Lighting load required for wide range dimming, no de-rating is required; load up to 100% of the model's 45 watt rated capacity
  • Input Voltage: 100-120v AC 50/60Hz, λ=0. 65C, output Voltage: 12V DC constant Voltage, 45 watts, 3. 75a max
  • ETL listed, complies to UL standard 1310 and 8750, certified to Canada CSA standard C22. 2 no. 223-M91 and C22. 2 no. 250. 13, complies with FCC part 15B
Bestseller No. 8
HC Lighting - Halogen / Xenon Electronic Transformer 50W 60W,75W, 105W, and 150 Watt Max output 120 Volt Input / 12 Volt Out Put Potted Transformer
43 Reviews
HC Lighting - Halogen / Xenon Electronic Transformer 50W 60W,75W, 105W, and 150 Watt Max output 120 Volt Input / 12 Volt Out Put Potted Transformer
  • Electronic Halogen, Xenon, Krypton Transformer
  • 50W, 60W, 75W, 105W, 150W Output with Minimum 50 Watt Load
  • 120 Volt (VAC) Input - 12 Volt (VAC) output
  • Fully Potted Unit to help protect circuitry from elements.
  • Auto Reset Protected >20KHZ 60HZ - 0.5A
Bestseller No. 9
LED Driver 60 Watts Waterproof IP68 Power Supply Transformer Adapter 90V-260V AC to 12V DC Low Voltage Output for LED Light, Computer Project, Outdoor Light and Any 12V DC led Lights
19 Reviews
LED Driver 60 Watts Waterproof IP68 Power Supply Transformer Adapter 90V-260V AC to 12V DC Low Voltage Output for LED Light, Computer Project, Outdoor Light and Any 12V DC led Lights
  • The Model of LED Driver:Input: 90-260V AC 50/60HZ. Output: 12V DC 5A 60W
  • Automatic protection for Short circuit / overload / over voltage / over current / over temperature.Protection type: Hiccup mode, auto-recovery after fault condition is removed
  • Wide Range of LED Power Supply : Suitable for LED strip lights, led light bulbs ,Computer Project,Industrial,Outdoor Light and any 12V DC led lights
  • 100% Waterproof IP68 protect for outdoor use.Aluminum metal housing, easy for heat dissipation and ensure stability
  • High quality with 3 year warranty.LED transformer certification: IP68,CE,ROHS etc

Types of Low Voltage Transformers

Low Voltage Transformers Items

An Example Of Low Voltage Transformers

When looking into the various types of low voltage transformers, the obvious changing factor is the wattage of each transformer. This factor aside, low voltage transformers usually come in two styles, with some additional features thrown in.

The first style of low voltage transformer is the electronic transformer. Electronic transformers are more compact than their counterparts, and as such are perfect for hard-to-reach lighting areas, such as recessed lights. Keep in mind, electronic transformers are less durable than other forms of electronic transformers, and as such need to be replaced more often to prevent shock or fire hazards and to keep them working in tip-top shape.

The second form of low voltage transformers are magnetic transformers. While larger than the electronic transformer, these transformers are more durable and can usually produce more power. With the ability to power up to 1200 watts, these transformers are perfect for larger lights and more complex lighting schemes. Bear in mind, they do tend to be a bit heavier than their magnetic counterparts, so keep that in mind when installing them.

While both kinds of transformers can come in plastic and metal options, you probably want to encase any plastic transformers in a metal housing, like a junction box, to make it easier to install. If a transformer is “enclosed” or “encased” congratulations! It’s all set for you to install and should be fairly easy to connect to a terminal block.

When picking a low voltage transformer, make sure to double check the wattage you need and the amount of lights you intend to install. Using more than one transformer is a good idea for larger lighting projects, and you can look into timer-based transformers to help take some of the micromanagement out of your outdoor lighting.

The Latest In Low Voltage Transformers

New
LED Transformer 30V LED Controller Class 2 Power Supply, IP44 Waterproof Low Voltage Transformer US Plug For Christmas Light, String Light Indoor Outdoor Use
  • Input: 120V-240V, 50- 60HZ, Output: 30V, 0.2A, 6W
  • Conform to UL STD. 1310 and Certified to C22.2 NO.223
  • This 30V LED transformer with 8 function modes, combination, in waves, sequential, slo-glo, chasing/flash slow fade, twinkle/flash, steady on.
  • This transformer fits for low voltage led device, such as Holiday decoration light, Christmas Trees, String Light, Lawn Lamp, Curtain Light.
  • Please check the volts, currents, watts and connector if it fits for your device or not, if you don't how to choose our transformer, please contact us for help.
New
inShareplus LED Power Supply, 200W IP67 Waterproof Outdoor Driver,AC 90-265V to DC 12V 16.6A Low Voltage Transformer, Adapter with 3-Prong Plug for LED Light, Computer Project, Outdoor Use
3 Reviews
inShareplus LED Power Supply, 200W IP67 Waterproof Outdoor Driver,AC 90-265V to DC 12V 16.6A Low Voltage Transformer, Adapter with 3-Prong Plug for LED Light, Computer Project, Outdoor Use
  • Aluminum alloy metal housing, easy for heat dissipation and ensure stability. 100% Waterproof IP67 protect for outdoor use
  • Input: 90-265V AC 50/60HZ, Output: 12V DC 16.6A 200W.
  • Converts 110V AC to 12V DC, widely use for LED strip lights, led light bulbs and other 12V DC led lights(≤200W).
  • Automatic protection for: short circuit, overload, over voltage, over current, high temperature. Protection type: Hiccup mode, auto-recovery after fault condition is removed
  • High quality with 1 year warranty, and our seller support team always stand behind our products in any way, so please contact us for replacement if you have any quality problems.
New
inShareplus LED Power Supply, 300W IP67 Waterproof Outdoor Driver,AC 90-265V to DC 24V 12.5A Low Voltage Transformer, Adapter with 3-Prong Plug for LED Light, Computer Project, Outdoor Use
8 Reviews
inShareplus LED Power Supply, 300W IP67 Waterproof Outdoor Driver,AC 90-265V to DC 24V 12.5A Low Voltage Transformer, Adapter with 3-Prong Plug for LED Light, Computer Project, Outdoor Use
  • Aluminum alloy metal housing, easy for heat dissipation and ensure stability. 100% Waterproof IP67 protect for outdoor use
  • Input: 90-265V AC 50/60HZ, Output: 24V DC 12.5A 300W
  • Converts 110V AC to 24V DC, widely use for LED strip lights, led light bulbs and other 24V DC led lights(≤300W).
  • Automatic protection for: short circuit, overload, over voltage, over current, high temperature. Protection type: Hiccup mode, auto-recovery after fault condition is removed
  • High quality with 1 year warranty, and our seller support team always stand behind our products in any way, so please contact us for replacement if you have any quality problems.

Low Voltage Transformers Video

Here is a YouTube video discussing various types of low voltage transformers:

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