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4.5 out of 5
90.77% of customers are satisfied
5.0 out of 5 stars Very well engineered and high quality parts for chassis and circuitry
I purchased 4 of the 240 watt version 12-Volt DC power supplies for my LEGO room lighting project. Each of these $23 units will take the place to two (allegedly) 120 watt (10 Amp) 12-Volt DC power supplies that cost $20 each. Although the $20 power supplies are admittedly much easier to setup/install they turned out to be totally worthless as they cannot maintain 72 watt (6 Amp) output without blinking due to thermal overload protection. (Returned the junk units and left appropriately detailed 1-star review.)As for these wonders of modern production I am most impressed. Although they are somewhat more difficult to install. First you have to provide your own power cable to connect to your 120 (or 240) volt AC line. I used an old PC power cable that I cut to length, stripped the wires and soldered on ring terminal connectors. If you are using solid wires you could just as easily insert the wire into the terminal and tighten the screw.Among the nice features of these power supplies:- Between each terminal screw is a divider wall to prevent shorts.- There is a clear plastic flip-up protective cover over the whole row of terminal screws to prevent accidental contact/shorts across the terminals.- 3 separate positive and 3 separate negative terminals.- easily accessible voltage adjustment screw to fine tune the output.- Strong durable metal chassis.- Well vented chassis design with closely spaced hole pattern on top and side.- High grade components inside.This size power supply does not come with its own cooling fan. My application required me ti install it upside-down on the ceiling between the joists. Therefore the vent holes were mostly underneath the unit. As heat tends to rise normal air convection could not take place. Therefore it started to get quite warm (understatement) with just a partial load. Therefore I purchased (through Bolo) a "Noctua NF-A8 FLX, Premium Quiet Fan (3-Pin, 80mm)" for cooling. The fan itself is nearly silent. However, when I placed it against the PS chassis it was definitely audible. Although there are plenty of holes in the chassis for air flow, there was still a lot of metal (between the holes) to block air flow from a fan in direct contact with the chassis. Therefore I decided to cut an approximately 3" hole in the chassis top right over the main heat-sink. I knew this would void my warranty but figured that would be preferable to burning the house down when the PS was under the full intended load. (Burning the house down would no doubt displease my wife...)Knowing it is unwise to operate anything at or near 100% for extended periods I will keep the max load under 200 watts (of 240 watts available).When I removed the chassis cover to drill the hole I had a clear view of the internal parts. What I saw impressed me as much as anything else about the design. I am not an electrical engineer but I know some basics about electronics and circuitry. At this point I would have to look up the color codes for the values of the resistors but I immediately recognized the *gold* colored "tolerance" ring on all of the resistors, as apposed to silver or none.After I cut out the hole for the fan I attached it with 2 of the included rubber connectors and use single wires pulled out of Cat5 to hold down the other 2 corners. (I could only get 2 holes in the chassis to line up with the fan's holes.) I connected the (included with the fan) 3-pin to 4-pin adapter, then found an old PC internal drive Y-splitter power cable and cut it to use as the connector between the PS and the fan. (See picture.) Since my lighting project has the power supply driving 2 branches of lights that left the 3rd set of terminals open to run this 12-volt fan. Quite convenient.Now, with the fan running the power supply barely feels a little warm to the touch while running it at about 110 watts - so far. I do expect it to get warmer when I eventually drive it at 195 watts but I think the fan should be able to keep up. If not I'll just upgrade the fan.(Electronics 100 review: Gold tolerance equals +/- 5% of the marked value for transistors. Silver equals =/- 10% and none equals +/- 20 percent.) Yes, you can get resistors with even closer than 5% tolerance but I think that would be overkill for a basic power supply. That said, the designers and production managers clearly did not go with the cheapest parts available but hold to higher than normal standards.There is a fuse soldered onto the circuit board with clearly printed warning to only use the same type of replacement fuse. Having to unsolder/resolder a fuse would be inconvenient, as opposed to have a snap-in fuse holder. However, the soldered connection is better than a mechanical snap-in connection. Perhaps this was a deliberate choice of the designing engineer(s)? The only problem is the fuse type is not indicated... Hopefully I'll never have to replace it.Yes, I am quite pleased with this product. I highly recommend this company's power supplies for any project where you need a reliable low voltage power source.The LEGO Roboticist
5.0 out of 5 stars Great power supply
I’m using this for a Chinese diesel heater in my shed, I have volt meter installed and it runs the glow plug with ease, the only down side is the fan it’s very loud, it says that the fan is automatic but mine just runs full time even without a load
5.0 out of 5 stars Great price
Works great for testing car stereos.
1.0 out of 5 stars POS fire hazard
Installed and within 10 seconds started arcing, popping and smoking before shutting off. Definitely something shorted inside. Luckily it wasn’t near anything flammable.Its rated at 200 watts and device I was powering only draws 80 watts so overloading was not an issue.
4.0 out of 5 stars The fan is...not good.
The fan is extremely noisy for the first hour or so of operation. Once it's "warmed up," it's only moderately noisy. If you plan on running this 24x7 and the noise is no problem (like in a 3D printer with other noisier things going on), it's reliable and does its job well.
5.0 out of 5 stars Works great, no RFI, solid adjustable voltage
I bought this to drive a 12 volt 2-way 25w watt radio. It came out of the box right at 12 volts, and to the right of the electrical connections is a small screw to adjust the voltage as per your particular needs.
5.0 out of 5 stars Good Experience Overall
Purchased this product as a replacement power supply for under cabinet LED tape lights. Received it promptly but item showed slight damage and only worked for 24 hours before failing. Contacted manufacturer who quickly shipped a replacement which arrived within a few days. Very impressed with their responsive customer service!
5.0 out of 5 stars Excellent LED strip power source
I strongly recommend this power supply device. High quality construction and convenient connectors.I am using this device to drive 14 short LED strips in a Master closet. The LED strips will serve as accent lighting inside cabinets and will be controlled with 5 separate dimmers. The power supply's 10 amp rating will easily drive the LEDs. I set up the power supply temporarily with two LED strips and it ran cool and very quiet. The compact dimensions of the device will make it easy to hide.
Works great
So far so good for the price. Used a 2 wire cord from a old grinder and thinking one to live and one to ground buti had to use the neutral instead. Im no electrician. No fires.
Does the job
Pick up this power supply to run my Chinese diesel heater for my garage. Works great and no issues. The fan will make a bit of noise when you start it cold but only lasts for a minute.
Convenient
Unit works good as advertised. Only thing I would recommend is to have a power cord supplied as part of the package for convenience of installation.
très bon produit
Très bon petit transfo, je m'en sers pour alimenter l'éclairage pour ma webcam.
Good power supply
Using this power supply to run a diesel heater in my shop. Has enough power to run it, been 3 months already with no issues
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inShareplus 12V 33A 400W, DC Universal Regulated Switching Power Supply, Converter AC 100-240V to DC 12 Volt LED Driver, Transformer, Adapter for LED Strip Light, 3D Printer, Radio, Computer Project
BHD17027
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Product origin: United States
Electrical items shipped from the US are by default considered to be 120v, unless stated otherwise in the product description. Contact Bolo support for voltage information of specific products. A step-up transformer is required to convert from 120v to 240v. All heating electrical items of 120v will be automatically cancelled.
All product information listed on the site are from 3rd party sources, including images and reviews. bolo.bh is not liable for any claims or promotions mentioned on the product description or images with textual content. For detailed product information, please contact the manufacturer or Bolo support by logging into your account. Unless stated otherwise during checkout, all import taxes and duty are included in the price mentioned on the product page. bolo.bh follows the rules and regulations of sale in Bahrain and will cancel items in an order that are illegal for sale in Bahrain. We take all the necessary steps to ensure only products for sale in Bahrain are displayed. Product stock and delivery estimate may change with the seller even after placing the order. All items are shipped by air and items marked “Dangerous Goods (DG)” by the IATA will be cancelled from orders. We strive to process your order as soon as it is finalized.
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