IRS2092 (IRAUDAMP7S) + IRFI4019 - Page 16

Frosteh · 4th January 2012, 09:39 PM

Is the A350SMPS from connexelectronic (350W) suitable for LJM's L15D board? I'm trying to decide whether or not I can save the $30 over the SMPS500R. I'll only be using one channel.

luka · 4th January 2012, 11:04 PM

I would say it is

alkasar · 5th January 2012, 10:05 AM

I would give preference to a regulated SMPS. 300R, 500R is a matter of power needed.

Frosteh · 5th January 2012, 05:57 PM

Quote:

Originally Posted by alkasar

I would give preference to a regulated SMPS. 300R, 500R is a matter of power needed.

What is the advantage of a regulated SMPS over non regulated? I'm afraid I don't know much about the technologies in each.

alkasar · 5th January 2012, 07:01 PM

Quote:

Originally Posted by Frosteh

What is the advantage of a regulated SMPS over non regulated? I'm afraid I don't know much about the technologies in each.

Regulated power supply provide constant voltage, regardless of the load.
Un-regulated power supply output voltage may vary, according to the current required by the load.

ClassD amplifiers have a relative lower PSRR (power supply rejection ratio) than traditional classA or AB amplifiers. They behave better with a regulated power supply.

MrSlim · 5th January 2012, 07:07 PM

Quote:

Originally Posted by Frosteh

What is the advantage of a regulated SMPS over non regulated? I'm afraid I don't know much about the technologies in each.

This is a good description..

or if you want some Bedtime Reading...

elb · 16th January 2012, 06:29 AM

Hi,

I bought a pair of L15D on ebay.

I tried to power the boards as per the daigram on the sellers site.
I used a meanwell SMPS at 55 vdc and the amps did not power up.

I tied to PM ljm but his in box is full.
Can anyone help.

Best Regards,
elb

khjen · 16th January 2012, 12:09 PM

Quote:

Originally Posted by elb

Hi,

I bought a pair of L15D on ebay.

I tried to power the boards as per the daigram on the sellers site.
I used a meanwell SMPS at 55 vdc and the amps did not power up.

I tied to PM ljm but his in box is full.
Can anyone help.

Best Regards,
elb

Hi Elb

I have L15D - it needs a slit rail supply with +/- rail and ground. Meanwell SMPS supplies only single rail only - are you using two Menawell supplies for +/- 55V DC?

ljm_ljm · 23rd January 2012, 05:01 AM

Quote:

Originally Posted by elb

Hi,

I bought a pair of L15D on ebay.

I tried to power the boards as per the daigram on the sellers site.
I used a meanwell SMPS at 55 vdc and the amps did not power up.

I tied to PM ljm but his in box is full.
Can anyone help.

Best Regards,
elb

Yes, you need dual voltage. + - 55V. You can see the power of your instructions.

If you have two identical single-voltage, and their ground and did not turn, you can get dual-voltage series.

Be careful on the power supply.　

alkasar · 23rd January 2012, 12:08 PM

Happy new (chinese) Year ljm

4th January 2012, 11:04 PM	#152
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	I would say it is __________________ home page @ http://www.classdaudio.tk/ @ 24/7 all year long I FEEL SLOVENIA

16th January 2012, 06:29 AM	#157
elb diyAudio Member Join Date: Aug 2009	L15D problem. Hi, I bought a pair of L15D on ebay. I tried to power the boards as per the daigram on the sellers site. I used a meanwell SMPS at 55 vdc and the amps did not power up. I tied to PM ljm but his in box is full. Can anyone help. Best Regards, elb

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4th January 2012, 09:39 PM	#151
Frosteh diyAudio Member Join Date: May 2011 Location: Kirkland, WA	Is the A350SMPS from connexelectronic (350W) suitable for LJM's L15D board? I'm trying to decide whether or not I can save the $30 over the SMPS500R. I'll only be using one channel.

5th January 2012, 10:05 AM	#153
alkasar diyAudio Member Join Date: Jan 2009 Location: near Paris, France	I would give preference to a regulated SMPS. 300R, 500R is a matter of power needed.

23rd January 2012, 12:08 PM	#160
alkasar diyAudio Member Join Date: Jan 2009 Location: near Paris, France	Happy new (chinese) Year ljm