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Velleman PSSMV1USA 3-12Vdc Switching Power Supply
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Velleman PSSMV1USA 3-12Vdc Switching Power Supply

By Velleman
4.2 out of 5 stars  See all reviews (202 customer reviews) 56 answered questions

Price: $15.95 & FREE Shipping on orders over $35. Details
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In Stock.
Sold by Electronix Express and Fulfilled by Amazon. Gift-wrap available.
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Specifications for this item

Number of Items
Overall Height
1.77  inches
Overall Width
9.06  inches
Part Number
836479003811 , 836479003835
Brand Name
0836479003835 , 0836479003811
Overall Length
5.71  inches

Product Features

  • Small, compact, and does not block other outlets
  • Consistently produces the exact voltage it is set
  • Versatile switching power supply that runs cool

Product Details

  • Shipping Weight: 7.2 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B00068U44I
  • Item model number: PSSMV1USA
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (202 customer reviews)
  • Amazon Best Sellers Rank: #108 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
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Frequently Bought Together

Velleman PSSMV1USA 3-12Vdc Switching Power Supply + Hosa Cable ACD477 Universal AC Power Supply + Universal AC Adapter 15V 16V 18V 18.5V 19V 19.5V 20V 22V 24V 70W
Price for all three: $40.35

Buy the selected items together

Product Description

Velleman Compact Switching Power Supply w/ Selectable Output Get rid of those bulky power-hungry heat-producing mains adapters. These adaptors use state-of-the-art switching power supplies and feature some major advantages such as: - cooler runn

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
140 of 142 people found the following review helpful
5.0 out of 5 stars Finally, a small power supply that delivers July 29, 2007
By Dan
This adapter (PSSMV1) is _exactly_ what I was looking for. This is actually a _regulated_ switching DC power supply which consistently produces the voltage it is set for and runs extremely cool.

I recently had a portable voice recorder fried by a Coby "universal" AC adapter only to discover that it delivered a much higher voltage than I set it for. For light loads, such unregulated universal adapters will deliver more voltage than desired potentially damaging electronics that don't have (enough) over-voltage protection built-in. Upon checking with a meter, I observed an output of ~10V with the voice recorder attached instead of the 3V I set it for.

Even with no load attached, the Velleman compact switching DC adapter produces exactly what it is set for. The next time I have to replace another AC adapter, I will be buying another Velleman compact switching DC power adapter (and will likely even pick up a spare before the need arises ;-).
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78 of 78 people found the following review helpful
5.0 out of 5 stars Extremely stable power supply December 17, 2008
By Lorenzo
Verified Purchase
When the power supply of my Linksys wireless access point unexpectedly died I bought this one from Welleman to replace it.
I am extremely satisfied, this power supply is far superior to any OEM supply because it is electronically regulated: the voltage you set is actually the voltage you get (some OEM power supplies have outputs up to 70% higher than the intended voltage).
Also, this power supply does not heat up (again, because it is electronically regulated), and therefore less likely to overheat and fail.
One word of advice, though: I recommend putting some tape over the voltage selector in order to avoid any accidental voltage switching, which can be deadly for the equipment connected to the power supply.
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49 of 49 people found the following review helpful
5.0 out of 5 stars Solid Universal Adaptor October 21, 2012
Verified Purchase
Length: 5:06 Mins
Here is a video review of the Compact Switching Adapter. A+ Hardware!
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40 of 41 people found the following review helpful
5.0 out of 5 stars Excellent product October 2, 2008
Small compact does not block other sockets on a surge strip unlike other products runs cool. Importantly one of the few adaptor that provides enough amps (1.5 amps) for high powered devices. Using it to run my cambridge soundworks.
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24 of 24 people found the following review helpful
4.0 out of 5 stars Nice adapter. Supplies voltage as advertised. November 22, 2011
Verified Purchase
I recently purchased this Vellemen universal AC adapter for some hobby electronics projects. Having been burned before with poorly made universal AC adapters (VCT VX-79NP - Multi-purpose Universal AC to DC Converter Adapter With Multiple Tips(1.5, 3, 4.5, 6, 7.5, 9 and 12V DC) - 1000mA), I was looking for something that actually gave the right voltage levels.

Using a multimeter, I checked the various voltage levels this adapter can produce and they all tested quite close to the advertised level. Unlike other cheap (and terrible) universal AC adapters (VCT VX-79NP), this one actually works as advertised.
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26 of 28 people found the following review helpful
5.0 out of 5 stars Solid adapter, works well November 5, 2012
By team W
Verified Purchase
If you have a DC power adapter which starts buzzing and making noise - that means it is failing and it needs to be replaced. This seems to be a pretty well-made, universal replacement for most DC adapters. It doesn't seem shoddily made, and so I'd expect it'll last a good long time.

The most important thing you need to know is that there is really no such thing as a truly "universal" DC adapter. So while this will probably work for most people in most applications, if you want to avoid disappointment, do yourself a favor, and take five minutes to answer the questions below. All this information SHOULD be on the back of the DC adapter you are replacing, although it is often in painfully small print and difficult to read.

(1) Does the voltage on the old adapter match one of the settings on this new adapter? (6v, 9v, etc.)

(2) Can you tell which part of the tip of the old adapter is carrying positive voltage now? Most, but not all adapters should have a little diagram showing you which part of the tip carries the positive voltage. If it isn't on the adapter, the diagram is sometimes right on the device itself, showing what needs to be plugged into it. If you can't figure it out, you have a 50% chance of sending the power down the wrong side of the tip, which could conceivably just fry your device. And no, nobody but you is going to pay for fixing the thing you killed by setting this up wrong. So it is pretty important to figure this out and get it right.

(3) Does the existing device need less than 1.5 Amps of power?
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17 of 17 people found the following review helpful
4.0 out of 5 stars Power supply is versatile! (Velleman DC Adapter) March 2, 2012
Verified Purchase
Velleman Compact Universal DC Adapter Power Supply (PSSMV1USA).

This power supply is so handy to have around because it's so versatile!

* Very easy to select different dc voltages.
* Comes with a good variety of adapter plugs. The pack of plugs can be easily attached to the cable using the cable's twist-tie so they're not lost.
* Nice design that allows you to configure the polarity (+/-) of the plug to meet the need of your device. Basically each adapter plug is labeled to indicate which way to use it.

* I've noticed some line noise with this power supply. Most devices will have no issue. However, I have a particular scenario with an fm radio having a hum sound coming from the radio's speakers when this is power supply is plugged into the same outlet. I'm not fully sure it's an issue with the power supply or if it's an issue with the fm radio; but the hum sound only occurs when this power supply is used on the same outlet.

This is a great item to have on hand in any household.
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Most Recent Customer Reviews
2.0 out of 5 stars Not good quality
Not the best quality product. You get what you pay for. Would not buy again. Broke after switching prongs 4 times. I wouldn't recommend this product.
Published 1 day ago by Robert K. Njuguna
5.0 out of 5 stars Excellent construction
Does it exactly what I need it to do. Not only is it visually appealing to a gadget junkie, the attention to detail and care in construction are obvious.
Published 2 days ago by Ira Kaplan
5.0 out of 5 stars Exceeded expectations
The item worked flawlessly. The price was much lower than other similar units with the same features. Description and boxing was accurate and acceptable. Read more
Published 5 days ago by Black Cat
5.0 out of 5 stars Geat power supply
I really needed a power supply and found the ones at radio shack to be expensive. I bought this one for the price and I'm pleased to have done so. Read more
Published 8 days ago by Romeo
5.0 out of 5 stars Very good power adapter
I needed this to carry with me overseas to charge some of my electronic items. It worked very well, the adapter plugs fits snugly and do not come out even when you pull on them... Read more
Published 10 days ago by V. Kothiyal
5.0 out of 5 stars Nice package
Bought this product and i have not used it very much yet. Reviews are very good. It is one of those (when you need it, you got it) tools ! Read more
Published 12 days ago by Huricane
4.0 out of 5 stars good seller
they were a quick shipper and the product was as described. the price was far and I would recommend them to my friends
Published 13 days ago by Clarence Hope
5.0 out of 5 stars Works great
Very versatile, I bought this for my candy dispenser. It doesn't make a noise easy to set the voltage, and there are mulitiple connectors. Read more
Published 17 days ago by Akfu
1.0 out of 5 stars DON'T WASTE YOUR MONEY!
I've had two of these. Neither worked more than a month, then they just quit. No way will I buy another!
Published 21 days ago by Cast Iron Chef
5.0 out of 5 stars great product!
Works as expected. No problems so far after a month. I especially like that i can change the voltage output to power most devices without worry.
Published 22 days ago by Pen Name
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