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Connexelectronic Commercial Vendors large & small hawking their wares

 
 
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Old 27th October 2010, 03:26 AM   #131
codegen is offline codegen  Norway
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Okey, thanks for such fast answer. Is the price of a custom voltage same, or is it an extra charge?
 
Old 27th October 2010, 04:33 AM   #132
Cristi is offline Cristi
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Switched Mode Power Supplies (SMPS)
The price is same, but you have to send me a mail regarding the desired voltage to prepare the transformer for that.
 
Old 27th October 2010, 03:02 PM   #133
alkasar is offline alkasar  France
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one question about the new single voltage smps was unanswered: can it be changed to deliver 48V ? thanks
 
Old 28th October 2010, 10:15 AM   #134
Cristi is offline Cristi
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Switched Mode Power Supplies (SMPS)
there are 2 more versions available, 48V (45-52V) and 72V (65-75V). the pcb will be the same, just the transformer and capacitors are different.
 
Old 30th October 2010, 04:39 AM   #135
Cristi is offline Cristi
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Switched Mode Power Supplies (SMPS)
SMPS500-24 Schematic
Attached Files
File Type: pdf SMPS500R-24.pdf (95.2 KB, 390 views)
 
Old 2nd November 2010, 04:25 PM   #136
Cristi is offline Cristi
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Switched Mode Power Supplies (SMPS)
SMPS500R-24 with 48V, 72V and on request other values available: Connexelectronic
I changed the product name from SMPS500R-24 to SMPS500R-Single.
 
Old 3rd November 2010, 07:53 AM   #137
chris7916 is offline chris7916  France
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Quote:
Originally Posted by Cristi View Post
SMPS500R-72V
Excellent! With some more power, it will perfectly fit DA-1 isn't it?
as it is today, it should be almost OK with 8Ω at average power level.
Is there any plan for SMPS100R-72V?

BTW, in case of use with DA-1, is regulation provided by 7812 clean enough or will it deserve additional filtering?
 
Old 3rd November 2010, 10:22 AM   #138
TCx is offline TCx  Czech Republic
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Hi Cristi, I think that many DIYers would welcome a cheaper lower power single voltage SMPS (perhaps 200 - 300W), especially those who use amp boards from Hifimediy (30V for smaller stereo amps, 48V for T3 amp). Maybe you could make some deal with Nick122147 and sell these SMPS to him in batches so he could resell them with amp modules from hifimediy.com shop. It would be convenient for buyers as they could order both amps and SMPS' from one source and save a bit on postage fees.

Also maybe your existing dual voltage +-24V A350SMPS could be used as single voltage 48V power source?

Just thinking loud...
 
Old 4th November 2010, 08:57 AM   #139
SoldierAnt76 is offline SoldierAnt76  United States
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A 200-300 watt, single-voltage SMPS would be a fantastic idea if it cost significantly less than its 500 watt cousin. However, since the least expensive Connex SMPS is $50/40, I wonder whether the price would be all that much lower. The Meanwell S-350 will still win on cost per watt at $30, and if you're paying extra for a Connex supply you might as well pay a bit more for the additional headroom.

But yeah, a package deal would be a great way to get this SMPS into the hands of more of Hifimediy's users. Or maybe a link on his webpage would be enough.
 
Old 4th November 2010, 10:06 AM   #140
Cristi is offline Cristi
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Switched Mode Power Supplies (SMPS)
Thanks for the proposal.
i was considering this aspect, of making lower power SMPS's, 50W, 100W, 150W, 200W. but as you pointed out, the so called "Meanwell" might beat the price at low power. that's also because of their let's say mysterious provenience, if you just take a look at their website you might have the surprise to discover that some models doesn't even exist, but they are still available from various sellers, and ebay is fluded with them. that's because some discovered that a product can sell better if wear a brand name, not necessary legitimate, and they are doing this. some are sold on ebay at 1/3 of the Meanwell catalog price. the surprise come when someone has 2 of them, one genuine and one from that category described above. you will notice the technological advance which made-it possible to get the stated performances with half number or size components compared to a genuine one.
so, i consider making some smaller SMPS's but i will put quality first, not the price. they will be cheaper than the ones which i have now, but i cannot guarantee that will be same or lower price than "meanwell's"
 

 


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