Best Lighting Low Voltage Transformers in 2020



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 Review:


The adapter came just as images. Small and solid in design with exactly what I needed. I purchased a few of these and all are running great! Highest load is about 34 watts on one of the transformers on a single 250 run consisting of 17 2watt lights and they are all visually equally as bright. No issues in the week/2 weeks I’ve had them installed.



HitLights 24 Watt (2 Amp) LED Power Supply 110V AC to 12V DC Transformer UL-Listed Lighting Power Adapter for LED Strip Lights and Other Low Voltage Devices Review:


Product purchased: Hitlights 60w 12V 5A Power Transformer

Something to note beforehand. I have been buying other power transformers from other sellers here on amazon, All of them were not UL listed. Until
I almost had a fire from the last transformer I had bought from a "shall not be named" seller / manufacturer who's product would get very very hot during normal use etc.

Well this Hitlights transformer hasn't even gotten CLOSE to hot. At most it's been slightly more than room temperature. ZERO coil whine, Which is getting harder to find these days - Trust me I've bought enough of these things. I knew from the moment I picked it up that it was better quality simply from the weight of the device alone. Significantly heavier than the other "shant be named" brand but not a nuisance.

TL;DR: Good build quality, No coil whine, UL Listed (Double checked myself), Doesn't get unbearably hot.

Will post back if this unit ever has any issues as well as how the seller handles it. Might have to crack this baby open just to view its internals to compare it to the other one I've still got lying around. Though it'd be a shame to ruin the shell. :)



Armacost Lighting 840600 60 watt LED Power Supply Dimmable Driver, White Review:


The Armacost Lighting 840600 is a high quality, dimmable power supply for 12V LED fixtures or systems.

COMPATIBILITY: This power supply should be compatible with a wide range of 120V dimmers. The installation instructions state the following:

"Armacost Dimming LED Drivers are compatible with both forward phase (leading edge, triac, incandescent) and reverse phase (electronic low-voltage, ELV, and trailing edge) AC dimmers ... They are also compatible with low-voltage PWM dimmers and RGB color controllers.

"Although virtually all dimmers will work with Armacost Dimmable LED Drivers, Armacost Lighting recommends dimmers that can be programmed or have an adjustment dial to set the low end dimming range."

BUILT IN CONNECTORS: The built in connectors work well and quickly. They need to have some of the outer insulation to clamp onto, to keep the stress of any pull on the wire from going to the terminal connection itself. So don't strip too much of the inner or outer insulation.

LOW MINIMUM POWER LOAD: The minimum power load is just 5 watts.

VOLTAGE: Output is 12V DC.

DIMENSIONS: It's somewhat large, at 7-1/16 inches long by 2-3/8 inches wide by 1-3/8 inches high.

ENCLOSURES: If you want an enclosure, Armacost makes variations with enclosures for conduit connections.

The only real negative is the cost, though of course having a high-performing, high quality power supply makes it a reasonable value. Lower-watt drivers are less expensive than this one.

The manufacturer's website has lots more info, including specs and installation instruction.

TWO WARNINGS: First, be sure to get a power supply rated with enough watts to cover your needs.

Second, be careful to get a power supply with the right input voltage. Armacost makes a line of 12V dimmers and matching power supplies. This product is the universal power supply, to be used with a range of dimmers and 120V.



Armacost Lighting 840240 LED Power Supply Dimmable Driver, 24 Watt Review:


The Armacost Lighting 840600 is a high quality, dimmable power supply for 12V LED fixtures or systems.

COMPATIBILITY: This power supply should be compatible with a wide range of 120V dimmers. The installation instructions state the following:

"Armacost Dimming LED Drivers are compatible with both forward phase (leading edge, triac, incandescent) and reverse phase (electronic low-voltage, ELV, and trailing edge) AC dimmers ... They are also compatible with low-voltage PWM dimmers and RGB color controllers.

"Although virtually all dimmers will work with Armacost Dimmable LED Drivers, Armacost Lighting recommends dimmers that can be programmed or have an adjustment dial to set the low end dimming range."

BUILT IN CONNECTORS: The built in connectors work well and quickly. They need to have some of the outer insulation to clamp onto, to keep the stress of any pull on the wire from going to the terminal connection itself. So don't strip too much of the inner or outer insulation.

LOW MINIMUM POWER LOAD: The minimum power load is just 5 watts.

VOLTAGE: Output is 12V DC.

DIMENSIONS: It's somewhat large, at 7-1/16 inches long by 2-3/8 inches wide by 1-3/8 inches high.

ENCLOSURES: If you want an enclosure, Armacost makes variations with enclosures for conduit connections.

The only real negative is the cost, though of course having a high-performing, high quality power supply makes it a reasonable value. Lower-watt drivers are less expensive than this one.

The manufacturer's website has lots more info, including specs and installation instruction.

TWO WARNINGS: First, be sure to get a power supply rated with enough watts to cover your needs.

Second, be careful to get a power supply with the right input voltage. Armacost makes a line of 12V dimmers and matching power supplies. This product is the universal power supply, to be used with a range of dimmers and 120V.



Armacost Lighting 840450 45-Watt LED Power Supply Dimmable Driver Review:


The Armacost Lighting 840600 is a high quality, dimmable power supply for 12V LED fixtures or systems.

COMPATIBILITY: This power supply should be compatible with a wide range of 120V dimmers. The installation instructions state the following:

"Armacost Dimming LED Drivers are compatible with both forward phase (leading edge, triac, incandescent) and reverse phase (electronic low-voltage, ELV, and trailing edge) AC dimmers ... They are also compatible with low-voltage PWM dimmers and RGB color controllers.

"Although virtually all dimmers will work with Armacost Dimmable LED Drivers, Armacost Lighting recommends dimmers that can be programmed or have an adjustment dial to set the low end dimming range."

BUILT IN CONNECTORS: The built in connectors work well and quickly. They need to have some of the outer insulation to clamp onto, to keep the stress of any pull on the wire from going to the terminal connection itself. So don't strip too much of the inner or outer insulation.

LOW MINIMUM POWER LOAD: The minimum power load is just 5 watts.

VOLTAGE: Output is 12V DC.

DIMENSIONS: It's somewhat large, at 7-1/16 inches long by 2-3/8 inches wide by 1-3/8 inches high.

ENCLOSURES: If you want an enclosure, Armacost makes variations with enclosures for conduit connections.

The only real negative is the cost, though of course having a high-performing, high quality power supply makes it a reasonable value. Lower-watt drivers are less expensive than this one.

The manufacturer's website has lots more info, including specs and installation instruction.

TWO WARNINGS: First, be sure to get a power supply rated with enough watts to cover your needs.

Second, be careful to get a power supply with the right input voltage. Armacost makes a line of 12V dimmers and matching power supplies. This product is the universal power supply, to be used with a range of dimmers and 120V.



Honeywell RCA900N1008/N 16V Low Voltage Transformer Review:


When I moved into my new house, one thing that annoyed me was that the doorbell transformer, attached to the circuit panel, was over 20 years old, and by now was making a nasty buzzzzzzzzzzzzzzzzz sound 24 hours per day, as old/cheap/worn transformers do. I didn't have a good reason to replace it, until we redid all the walls upstairs, which necessitated removing the door bell chime itself. While I'm at it, I figured, I'll replace not only the chime with a modern electronically generated doorbell instead of the xylophone type (which is what we had up there), but now I'll replace that transformer. So I ordered this one.

Man what a difference. This transformer doesn't even make the slightest sound, and it doesn't even get more than very slightly warm to the touch. I wish I would have done it sooner, I didn't realize how loud that buzzing made my entire basement.

The only thing though--the no load voltage on this was 20.3 VAC, and under doorbell-like load, it was still well above 16 VAC, which is the labeled voltage. My new electronic doorbell chime said it required 16 VAC, but a quick call over to the manufacturer said "There isn't an electronic doorbell on the planet that will even remotely mind 20 VAC, don't worry about it, it'll be fine." And sure enough it was. Totally fine. So I'm very pleased.

If you're reading this, you're obviously noticing this transformer is a few bucks cheaper than the other ones, as I did. I don't see why it is---it seems great. Buy it now.



YUNLIGHTS LED Transformer LED Power Supply 0-36W, 12V DC, 3A, LED Voltage Driver Transformer 12V, Constant Voltage for LED Strip Lights, LED Display, Cabinet Lights and G4, MR11, MR16 Review:


first of all, I am not using these to drive LED lighting. I saw that these were 12v, had 3A of current and looked insulated enough that I might be able to use these for my audio amplifier DIY project. attached is a photo showing how I integrated them.

the orange plastic tabs do contradict the printed legend; there is a plus icon on both tabs and it means nothing on the ac side (of course) but its actually on the wrong side for the dc end. they should redo the plastic, so that there is no doubt about which is plus and which is minus.

there is a tiny bit of high freq whine from the psu modules when you get VERY close to them, but you have to be inches away. that does not affect my application.

power-on is clean and for audio, it actually comes on nicely without 'fighting' my amp modules (no strange noises on power on/off). that was a nice surprise.

also, inside each psu module is a glass fuse and its not soldered down, so that was also a good thing to notice.

I did not see any voids in the pc board to keep high voltage away from lower voltage. other psu boards will have slots and cutouts which shows they understood power can 'jump' even across non-trace areas of a pcb. took a star away for that.

for my app, its ok. the price is ok (could be cheaper, though) and all 4 were working when they arrived. soldering underneath the boards was mid-grade; not great but I've seen worse. its always a good idea to OPEN your power electronics and have a look at the pcb and see if any solder blobs need to be removed. this is a common problem with boards from china that are not cleaned as well as they should be, and sometimes solder 'flash' gets left behind. I always open and check before I turn power on the first time. fwiw.



LET-75 12V AC Class 2 Electronic Remote Transformer by Lightech Review:


One of my six Alico under-cabinet fixtures had all three lamps quit at the same time. What are the odds? HAD to be the transformer.

Tried to find Alico - only to find they were purhased by Elk Lighting. Guy there said I’d have to order from another source and that I should order the transformer and new sockets - all in a harness. That was going to cost around $95. A new fixture would cost around $115 - but that fixture didn’t have a hi-lo-off switch - and no one could tell me whether it had the same transformer.

So - I checked Amazon and found the exact replacement for $13.40. Works just fine!!

BTW - you cannot measure the output of these transformers using a standard analog meter! I think quite a few unhappy customers must have been unaware of this. It’s not the fault of the product - - but of the user.