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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

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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

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...

Ask An Expert

User Jorge Cave Asked:

I need a replacement power supply ac/dc adapter for LED lighting. Model number on current adapter is JY15-120-100-UD Input: 100-240V ~50/60Hz 0.4A Output: 12V 1000mA Can you please send recommendation. My lights turn on and then begin to flicker after 20 minutes and power supply seems to be overheating. Do you think that my power supply is going out? Thanks for your assistance. Jorge

Our Technician Answers:

Hi Jorge, If your LED lights are flickering, it is most likely a power supply issue, but before you start checking for power supply issues, make sure that the wiring and connections are ok.. Make sure there are no loose connections, all screws holding wires are tight, and all soldering is solid. If you confirm all this, and the lights are still flickering, first see if the power supply is overheating.. If it is getting really hot, it might be overloaded.. Make sure you are not running more lights than the power adapter can handle. If it is super hot, it is either defective, or not powerful enough for your load. The next thing is to check the Voltage of the output. With a voltmeter, see if the power supply is putting out a steady 12 Volts or if it is flickering.. If it is varying by more than 1V up or down, the power supply is defective. Replace the power supply.

User Marsha Carlson Asked:

AC Adapter input 100-240v, output 12V- 3amp needs replacement for our Lorex monitoring system Problem we are having is that in the possible replacements found, the circular plug although it seems to be same size outside diameter, is actually 1/8 smaller on the inside diameter and will not fit. How can we find apaptor with plug that fits. Any help appreciated

Our Technician Answers:

Hi M**** The majority of 12V 3A power supplies use a 5.5mm x 2.5mm connector. I would recommend trying that one because it is the standard. A small percentage of 12V Power Supplies use a 2.1mm interior barrel instead of 5.5mm. If the barrel is a little smaller, the 2.1mm should work.. Also, in most cases, a 2.5mm barrel will work with the 2.1mm plug anyways.. It will just be a little loose... The only other possibility will be to buy and a use a measurement gauge.. it is something that looks like a ruler, and has 2 points that slide apart and together to give an accurate measure of the power supply connector.

User Michael Asked:

I'm trying to power a belkin tunecast 2 fm transmtter. The input hole is very small which adapter do i need? Thanks in advance for your help.

Our Technician Answers:

Most power supplies that are 12V come in one of two types of connectors. The vast majority of 12V power supplies between 1A and 5A (Amps) use the standard 5.5mm x 2.5mm connector. This covers over 95% of all power supplies... There is a small minority that use a 5.5m x 2.1mm tip.. These are usually in the 1A to 2A range... Please note that in many of the 2.1mm connector units, the 2.5 mm connector will still work as they are so close in size.

Power Supply News and Information

Choosing a Power Supply for A DC Motor

This article deals with the special considerations you must make when you are choosing a power supply for a a DC motor. These special considerations require an understading of continous vs peak draw, and how they effect any specific 12V Power Supply.

Power Supply News


When choosing a power supply for a DC motor, you must know two things about a motor. These are the continous draw of the motor, measured in AMPS, or Watts, and the Peak Draw. The continous draw is the amount of power, or load, that the DC motor pulls from the power supply when it is already running. This is usually a smaller number than the peak draw. It is often measured in Watts, which is equal to the Amperage of the motor, multiplied by the voltage. So a 5 Amp DC motor running at 12V will consume 60 Watts of power. This is called the continuos draw, and must be less than the contimous load rating of the power supply. THe other major factor to consider when selecting a power supply for a DC motor is the peak draw. This is the amount of draw when the motor is just starting up, going from a stopped to running state. This peak power limit is usually significantly higher that the continous draw... So if a motor draws 3A on continous running, it might draw up to 5 Amps or more for a few moments as it starts running. Most switching power supplies have a protection circuit, which will turn them off if load peaks beyond it's safe capabilities. You must ensure that the peak rating of the motor does not surpass the peak shutoff protection of the powr supply. An example is, that if you want to power a DC motor with a 3A continous draw, you must assume the peak draw as about 50% more, so you should select a 5A power supply. This will be enough to get through the peak power usage, and will of course have no trouble running the continous load of 3A. Hope that makes it clear.....