Meanwell SMPS and UCD180 questions?

dtaylo3 · 10th December 2011, 02:55 AM

Can I run two UCD 180 modules off of one Meanwell S-350-48 SMPS?

As numbers imply, it is 350VA and 48 DC volts, a good input voltage for the UCD 180.

Second question would be, what do I run into the the ground input of the UCD 180? Do I connect the Meanwell ground to the input ground of the UCD 180, or do I ground the UCD 180 to a chassis ground?

AudioSan · 10th December 2011, 07:10 PM

first of all. is it 48VDC, +/-48VDC or +/-24VDC?

dtaylo3 · 10th December 2011, 10:20 PM

+/- 48VDC

dtaylo3 · 10th December 2011, 10:22 PM

...and with three terminals each of -/+ 48VDC outputs, but just one ground terminal.

dtaylo3 · 10th December 2011, 10:40 PM

I also have a robust 650VA transformer that is made for hypex modules and a Hypex power supply module, but I do not have a soft start. it will not be here for two weeks.
I wanted to see how the SMPS would sound. I could go with the linear supply, but without a softstart do i risk blowing the amp modules?

AudioSan · 10th December 2011, 11:41 PM

most UcD build run GND direkt from amp module to PSU.
you will not blow your amp without softstart. but maybe you will blow your main fuse on startup.

Baldin · 11th December 2011, 06:52 AM

dtaylo
On the specification it is called Single Output .... so I do not think it is a +- SMPS .... the ground is for the input, Ground and not common ..... ...
http://www.meanwell.com/search/s-350/s-350-spec.pdf
/Baldin

AudioSan · 11th December 2011, 02:40 PM

yes. these seems to be singel 48VDC.

dtaylo3 · 11th December 2011, 03:17 PM

I will stick with the linear supply. Thanks for the responses.

AudioSan · 11th December 2011, 09:30 PM

remember the softstart

or you will sit in the dark

10th December 2011, 02:55 AM	#1
dtaylo3 diyAudio Member Join Date: Nov 2004 Location: coloradao usa	Meanwell SMPS and UCD180 questions? Can I run two UCD 180 modules off of one Meanwell S-350-48 SMPS? As numbers imply, it is 350VA and 48 DC volts, a good input voltage for the UCD 180. Second question would be, what do I run into the the ground input of the UCD 180? Do I connect the Meanwell ground to the input ground of the UCD 180, or do I ground the UCD 180 to a chassis ground?

10th December 2011, 07:10 PM	#2
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	first of all. is it 48VDC, +/-48VDC or +/-24VDC? __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

10th December 2011, 11:41 PM	#6
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	most UcD build run GND direkt from amp module to PSU. you will not blow your amp without softstart. but maybe you will blow your main fuse on startup. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

11th December 2011, 06:52 AM	#7
Baldin diyAudio Member Join Date: Jan 2005 Location: Copenhagen	dtaylo On the specification it is called Single Output .... so I do not think it is a +- SMPS .... the ground is for the input, Ground and not common ..... ... http://www.meanwell.com/search/s-350/s-350-spec.pdf /Baldin __________________ Visit www.sensibleaudio.dk or read latest news on Baldin's Blog

11th December 2011, 02:40 PM	#8
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	yes. these seems to be singel 48VDC. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

10th December 2011, 10:20 PM	#3
dtaylo3 diyAudio Member Join Date: Nov 2004 Location: coloradao usa	+/- 48VDC

10th December 2011, 10:22 PM	#4
dtaylo3 diyAudio Member Join Date: Nov 2004 Location: coloradao usa	...and with three terminals each of -/+ 48VDC outputs, but just one ground terminal.

10th December 2011, 10:40 PM	#5
dtaylo3 diyAudio Member Join Date: Nov 2004 Location: coloradao usa	I also have a robust 650VA transformer that is made for hypex modules and a Hypex power supply module, but I do not have a soft start. it will not be here for two weeks. I wanted to see how the SMPS would sound. I could go with the linear supply, but without a softstart do i risk blowing the amp modules?

11th December 2011, 03:17 PM	#9
dtaylo3 diyAudio Member Join Date: Nov 2004 Location: coloradao usa	I will stick with the linear supply. Thanks for the responses.

11th December 2011, 09:30 PM	#10
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	remember the softstart or you will sit in the dark __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Pair of TK2050 amps with matching 27 volt Meanwell Smps	bigaudioscotto	Swap Meet	3	25th January 2011 05:19 PM
Meanwell SMPS and LM3886?	THUMP LUMP	Chip Amps	63	25th November 2010 10:38 PM
Meanwell 12V and 24V power supplies SMPS	boywonder	Swap Meet	2	21st September 2010 01:56 AM
SMPS Meanwell S-250-24 (24V-10A) [20€+ship]	madqwerty	Swap Meet	1	19th September 2009 10:25 AM
using meanwell SMPS S-350 as power amp PSU?	lhgin	Power Supplies	2	18th August 2009 10:36 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read