Is this really an SMPS?

TylerDurden · 13th July 2011, 09:31 PM

A nice quick question from a proper newbie.

This says it is a true Switch Mode Power Supply, can this be true?

NEW 12V 5A (12V 4A) Switch Mode Power Supply, Inc VAT | eBay

Thanks

TD

nigelwright7557 · 13th July 2011, 10:09 PM

Must be true cant get a 48va transformer in that small case.
It is very cheap.

Pano · 13th July 2011, 10:40 PM

Sure looks like a typical "line lump" SMPS. And as Nigel says, too small for a transformer of that capacity. For the price it's worth a look.
What do you plan to power with it?

TylerDurden · 13th July 2011, 10:54 PM

Just a class T amp based on the TA2021.

Pano · 13th July 2011, 11:05 PM

More than enough, for sure. Try it and let us know. I've found that many of these sound slightly different. DVE brand has been my fave so far.

TylerDurden · 13th July 2011, 11:07 PM

Thanks for the info. I don't have the amp yet nor the ability to test against other power units. I will endeavour to give some feedback however.

tomchr · 13th July 2011, 11:09 PM

My trusty old Weller TCP soldering iron is powered by a 24 V, 60 W switchmode supply of about the same size. I think I paid an entire $5 for it on ePay. It was labeled as the supply for some obscure printer I think.

~Tom

! · 14th July 2011, 07:31 AM

I would ask the seller what brand it is, some generics are pretty crude, dirty output and short lived so I would avoid it if you don't recognize the brand.

TylerDurden · 14th July 2011, 10:08 AM

The brand is STIGER, and manufacturer is Stiger Int. Ltd. (China).

That doesn't ring any bells with me, but it still seems a reasonable, cheap option compared to the standard Regulated supplies, doesn't it.

eccdbb · 14th July 2011, 11:03 AM

Why do laptop power adapters cost so much compared to this?

13th July 2011, 09:31 PM	#1
TylerDurden diyAudio Member Join Date: Jul 2011	Is this really an SMPS? A nice quick question from a proper newbie. This says it is a true Switch Mode Power Supply, can this be true? NEW 12V 5A (12V 4A) Switch Mode Power Supply, Inc VAT \| eBay Thanks TD

13th July 2011, 10:09 PM	#2
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	Must be true cant get a 48va transformer in that small case. It is very cheap. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

13th July 2011, 10:40 PM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Sure looks like a typical "line lump" SMPS. And as Nigel says, too small for a transformer of that capacity. For the price it's worth a look. What do you plan to power with it? __________________ Take the Speaker Voltage Test!

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13th July 2011, 10:54 PM	#4
TylerDurden diyAudio Member Join Date: Jul 2011	Just a class T amp based on the TA2021.

13th July 2011, 11:05 PM	#5
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	More than enough, for sure. Try it and let us know. I've found that many of these sound slightly different. DVE brand has been my fave so far.

13th July 2011, 11:07 PM	#6
TylerDurden diyAudio Member Join Date: Jul 2011	Thanks for the info. I don't have the amp yet nor the ability to test against other power units. I will endeavour to give some feedback however.

13th July 2011, 11:09 PM	#7
tomchr diyAudio Member Join Date: Feb 2009 Location: Greater Seattle Area	My trusty old Weller TCP soldering iron is powered by a 24 V, 60 W switchmode supply of about the same size. I think I paid an entire $5 for it on ePay. It was labeled as the supply for some obscure printer I think. ~Tom

14th July 2011, 07:31 AM	#8
! diyAudio Member Join Date: Jun 2005 Location: Midwest	I would ask the seller what brand it is, some generics are pretty crude, dirty output and short lived so I would avoid it if you don't recognize the brand.

14th July 2011, 10:08 AM	#9
TylerDurden diyAudio Member Join Date: Jul 2011	The brand is STIGER, and manufacturer is Stiger Int. Ltd. (China). That doesn't ring any bells with me, but it still seems a reasonable, cheap option compared to the standard Regulated supplies, doesn't it.

14th July 2011, 11:03 AM	#10
eccdbb diyAudio Member Join Date: May 2011	Why do laptop power adapters cost so much compared to this?

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