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Power Supply Adapters for Electronic Devices.

Power Supply Adapters for:

LED Lights   • Hard Drives   • Monitors
Video   •   DC Motors   •   Audio
Any device that requires stable DC power.
High quality Power Supply

Same Day Shipping: Order before 1 PM Eastern time and your order will ship same day!

Standard Power Supply Adapters: 12 Volt DC (12V DC):

These standard 12V Power Supplies are ideal for all home or consumer application. They have a very low failure rate, and are covered by a 1 year warranty.

Standard Power Supply Adapter

UL Listed Power Supply Adapters: 12 Volt DC (12V DC):

These UL listed power supplies recieve the highest level of testing, and are UL certified for
manufacturing quality. They have a 0% failure rate, and come with a 2 year
immediate replacement warranty.

UL Listed Logo
Waterproof Power Supply Adapter: 12 Volt DC (12V DC / Outdoor)
Waterproof 12V Power Supply
Waterproof Power Supply for Outdoor or Humid Environment Use.
This power adapter has a sealed case that allows it to be placed in rainy
environments, humid environment, or other tough environmental conditions.
LED lights/Strips, Signs, Water Pumps, Security Cameras etc...
Power Supply Adapter for LED lights and Strips: 12 Volt DC (12V DC)
Power Supply Adapter for LED lights

This power adapter supplies a constant current, Ideal for all types of
LED based lights, including signs, camera lights, LED strips and many more.

Constant current for stable lighting

Ask An Expert

User Patricia Klein Asked:

I have a fiber optic Santa, 4' high, and I no longer have the adapter that goes to it. On the bottom it says "use only a 12v/25mv adapter" it also says no more than 20 watts. Can you help me determine which adapter I need? thanks. I'd love to get it "yesterday". thank you.

Our Technician Answers:

Hi.. In order to find out the size of power supply you need, you will use a very simple calculation. You already know that the voltage is 12V. You also know the wattage as 20 Watts... To find the Amp size of the unit, you will just divide the wattage by the amperage. so 20W / 12V equals 1.66 Amps... Amperage represents the maximum power usage your device needs so you need a power supply that can provide the same or greater amount of power. In this case, you would round 1.66A up to the nearest whole number, which is 2A... You can also use a bigger one if you wish, as the power supply will only give whatever amp load the device you are running needs.. Here is a link to the power supply you need. It is a 12 Volt 2 Amp Power supply: http://12vadapters.com/adapter/power-supply/12v/2-amp-ul-listed-12-volt-2a.html

User Jen Brothers Asked:

Hi.. I hope you can answer my question. I have a small hand router I use for carving in wood. It says it needs a DC power supply, and it is 60 Watts... I bought a 5A power supply, but it seems like it only works for a second, then the motor stops... What is wrong?? I tested the Power SUpply with something else, and it works..

Our Technician Answers:

Hi Jen, Thanks got your question. I know the problem. A DC motor has some special considerations when selecting a power supply. Your motor probably has a continuous use of 5A of 60 Watts, but that is only part of the picture. There is something else called peak power, which is the startup power necessary to get the motor running. The peak power is a lot more than the continuous use. When you press the button, for the motor to overcome resistance, and start turning, it usually pulls about 50% more power.. so for a 5A motor, up to 8A.. This happens for a second, then once it is spinning, it drops to continuous use power level. What is happening in your case is that the power supply has a shut-off circuit that protects the power supply... Once your load passes 5A, the power supply just shuts off... In order to fix this issue, you need a power supply that is larger than the peak power of your motor.. So if you are using a 60W motor at 12 Volts, you should order the 12V 8A, or even 10A power supply... Good Luck!

User Pedro Garcia Asked:

I am looking for AC adapter SA-48C for my Phantom chess player. Thank for your attention. Pedro

Our Technician Answers:

Hi Pedro... I can't answer based on a specific brand.. I need to know the Voltage and the Amperage of the device you want to power. Also, it would be good to see if it has a standard connector, or a non standard connector. Most 12V devices use a power supply with a 5.5mm x 2.5mm barrel connector..

Power Supply News and Information

What Is a an AC/DC Power Supply, and What Does It Do?

This article tries to explain the function of an AC/DC power supply by showing the difference between AC and DC current, the two major forms of electrical power that exist today.

Power Supply News


All the 12V Power Supplies you see on 12vAdapters.com, and most other websites serve one single function. They take AC Power (Usually 120V or 240V, or anywhere in between), and transform it to DC power, usually between 12V and 14v. In order to understand this concept, you have to understand the underlying difference between AC and DC electricity. AC and DC are the two existing forms of electricity. AC stands for Alternating Current, and DC stands for Direct Current. As the name implies, DC runs in a single direction and direct line from positive to negative poles. AC on the other hand alternates its motion in one direction, then in the other, usually on a cycle of 50HZ or 60Z. This means that it changes direction 50 or 60 times per minute. While the generator of a DC current has a fixed magnet, and fixed positive and negative poles, the generator of an AC current has a rotating magnet. The rotation of the magnet reverses the relative position of the negative and positive poles 50 or 60 times a second, thus alternating the flow of the electrons in the wire at that rate. Initially both of these systems were in competition for wide adoption. Thomas Edison was a big proponent of DC power, while Westinghouse was pushing the use of AC current. In the end, AC current won because it travels much better over long distances. While DC current can only travel about 1-2 KM over electrical wire until it starts losing voltage, AC current can travel hundreds of KMs at a time. Currently, all household current is AC, but most small devices run on DC, which is the more stable and non-oscillating of the two currents. So what an AC/DC power supply does is that it takes the AC current that travels well all the way to your house, and converts it to DC current, which most electronics and motors run on.