Meanwell external ± 15 Volt power supplies in the EU

[pvision]

Meanwell makes a triple-output switched-mode power supply that might make a good standard supply for low-power audio builds if you don't want to build a linear supply. They are CE-approved and give ± 15v and +5 volts. Standard output connector is a 5-pin DIN and the unit uses an IEC power cable. Input voltage is 90-264 VAC

There are Class 1 and Class 2 versions available. I'm not sure of the differences but suspect they are to do with electrical standards

https://www.meanwell.co.uk/media/productPDF/P25A-T-SPEC.PDF
https://www.meanwell.co.uk/p25a14e-r1b.html#horizontalTab1
https://www.mouser.co.uk/new/meanwell/mean-well-gp25a-gp25b-gp50a/

https://www.mouser.co.uk/ProductDetail/709-GP25A14E-R1B

Nick Froome

 

[JohnRoberts]

(caveat lector) I don't know if EU is same as US but I suspect the class II means mains power is double insulated, so safe to use in ungrounded chassis products, while class I expects a chassis bonded to safety ground to provide human safety in case of faults.

If my guess is correct, class II is probably more expensive and better.

JR 

 

[abbey road d enfer]

(caveat lector) I don't know if EU is same as US

In that respect, they're the same.
There are A and B versions of the 25W unit. The A has a 3-prong IEC connector, when the B version has a 2-pin IEC-320 C8.

 

[rock soderstrom]

Did you see that?

"Product available only to OEM/EMS Customers. Product is not shipped to consumers in the EU."

Why? 

 

[ruffrecords]

Did you see that?

"Product available only to OEM/EMS Customers. Product is not shipped to consumers in the EU."

Why? 

No I did not see that. Where did you see it?

Cheers

Ian

 

[abbey road d enfer]

No I did not see that. Where did you see it?

Cheers

Ian

It's in the 4th link; I guess phoning Meanwell would clear the situation. I think they probably have a distribution deal, so they would refer you to one of their distributors.

 

[rock soderstrom]

No I did not see that. Where did you see it?

Cheers

Ian

You can find it under "Specifications/ Delivery Restrictions" at the bottom of my screenshot.

Cheers

Edit: Thanks abbey!

 

[ruffrecords]

Ahah, now I see it. It is only on the Mouser page. It is not on the Meanwell data sheet. Also, the Meanwell data sheet says it has a  one year warranty but Mouser gives it a 3 year warranty.

I also notice the 15V rail can deliver 800mA but the -15V only 300mA.

Odd.

Cheers

Ian

 

[JohnRoberts]

Ahah, now I see it. It is only on the Mouser page. It is not on the Meanwell data sheet. Also, the Meanwell data sheet says it has a  one year warranty but Mouser gives it a 3 year warranty.

I also notice the 15V rail can deliver 800mA but the -15V only 300mA.

Odd.

Cheers

Ian

If it also has a +5V supply that power comes from the + side.

JR

 

[abbey road d enfer]

If it also has a +5V supply that power comes from the + side.

JR

I don't think so; the 5V output is rated at 2.5A. No way it can be derived from the 500mA 15V rail.
I would think it's done on purpose, since many applications make little use of the negative rail, except us.

 

[Gold]

On the external Meanwell supplies I use you should keep the 5v rail loaded. It goes into a power saving mode with higher distortion otherwise. I didn’t read this data sheet but I’d check that.

 

[pvision]

The "not for sale to consumers" didn't prevent me from adding one to a Farnell shopping cart. I didn't try checking out, though

Nick Froome

 

[Newmarket]

The "not for sale to consumers" didn't prevent me from adding one to a Farnell shopping cart. I didn't try checking out, though

Nick Froome

Thos Meanwell triple output supplies are also in RS with no restriction.
I know RS aren't 'retail' but it's easy enough to set up an account without credit.

 

[pvision]

A little postscript on this thread: reading the data sheet for the GP25A unearthed the following gem:

± 16 Volt / + 48 V also available for video system.
Optional order No. GP25A58F-R1B

± 16 Volt plus 48 volts - sounds to me like the ideal audio power supply!

https://www.mouser.co.uk/datasheet/2/260/GP25A-SPEC-1292132.pdf

Nick Froome

 

[JohnRoberts]

https://www.proaudiodesignforum.com/forum/php/viewtopic.php?f=7&t=943&hilit=meanwell

here is some more discussion on Wayne's forum

JR

 

[pvision]

Thanks for that link, JR, some useful info & other links there. Now I know what a common-mode filter is

UK Mouser link to Meanwell RT-50C triple-rail enclosed psu. £18.67

https://www.mouser.co.uk/ProductDetail/MEAN-WELL/RT-50C?qs=V9a8iPeg90zIvrS2cW%252bOsA%3D%3D

Nick Froome

 

[gyraf]

Strange - they make switchedmode powersupplies in almost every voltage between 1.2V and 90KV - but none between 144V and 360V..?? I'd like some 225-250V for my anodes, but that dosen't seem to exist for some reason?

(yes, OT, sorry)

Jakob E.

 

[ruffrecords]

Strange - they make switchedmode powersupplies in almost every voltage between 1.2V and 90KV - but none between 144V and 360V..?? I'd like some 225-250V for my anodes, but that doesn't seem to exist for some reason?

(yes, OT, sorry)

Jakob E.

We have discussed this before. Someone found a Meanwell LED driver that outputs aroound250V to 300V. I have bought one for evaluation. I think it will output up to an amp or so. Ideal for a big tube mixer if it works but I have not got round to testing it yet.

The original thread is here: https://groupdiy.com/index.php?topic=67318.msg854553#msg854553

Just looking through it I notice someone suggested using a 12V dc to240V acinverter booster of which there seems to be very many:

https://www.ebay.co.uk/sch/i.html?_osacat=0&_odkw=150W+Inverter+Boost+Board+Transformer+DC-AC+Converter+12V+to+110V+200V+220V+280V&_from=R40&_trksid=m570.l1313&_nkw=150W+Inverter+Boost+Board+Transformer+DC-AC+Converter&_sacat=0

This one in particular was recommended:

https://www.ebay.co.uk/itm/150W-Inverter-Board-Boost-Transformer-DC-AC-12V-to-110V-200V-220V-280V-Converter/263890707822?hash=item3d711ca56e:g:gowAAOSwke9aKO-x:rk:3f:0

They all produce an AC output at 30 something KHz so it just needs rectifying and smoothing in the usual way but with much smaller caps. The 12V supply they suggest comes from another SMPS which also supplies the heater. Interseting approach for smaller tube devices.

I found the Meanwell LED supply:

https://www.amazon.co.uk/ELG-150-C500A-3Y-sup-unit-switched-mode-150%C3%B7300VDC-MEANWELL/dp/B07CV3TQ8N

Meanwell part number is ELG-150-C500A-3Y

Cheers

Ian

 

[Bo Deadly]

Strange - they make switchedmode powersupplies in almost every voltage between 1.2V and 90KV - but none between 144V and 360V..?? I'd like some 225-250V for my anodes, but that dosen't seem to exist for some reason?

There are higher voltage supplies in that range and beyond. Someone here was torching resistors with a 400V one at some point. Never heard from him again.

Just click through the datasheets on the Mean Well's website. Look at HVGC, HLG and ELG and even LPC. LPC-150-350 goes to 430V and unless I'm reading the datasheets incorrectly that is at the rated current. Only beyond that does the voltage start to drop. $35 USD on mouser.

 

[Brian Roth]

A little postscript on this thread: reading the data sheet for the GP25A unearthed the following gem:

± 16 Volt / + 48 V also available for video system.
Optional order No. GP25A58F-R1B

± 16 Volt plus 48 volts - sounds to me like the ideal audio power supply!

https://www.mouser.co.uk/datasheet/2/260/GP25A-SPEC-1292132.pdf

Nick Froome

A Google search for that part number resulted with only links to the data sheet.  It appears no one in the world stocks it, which is a shame.  It indeed sounds like a great candidate for powering audio gear.

Bri