A new SMPS version with unipolar output voltage plus aux. will be available this month in the following weeks. there will be few versions with output voltage from 12V to 80V suitable for various class D or T amplifiers.
The posts on pages 11-12 answer your question. 😎 The power supplies currently available from Connex can be modified to produce the single output voltage required by the Hifimediy and Sure boards (as opposed to dual +/- voltages). But it'd be easier to wait for Cristi to finish the new SMPS, which won't require any mods.
I agree that the Meanwell S-350 power supply is bulky and hard to fit inside even a medium-sized case. So a smaller, more flexible SMPS would fill an important niche in the DIY audio market. 🙂
Hi Cristi,
I've just ordered a SMPS500R (+/-54V) and was wondering whether this will work OK with additional banks of 3 x 6800uf/63V caps each per rail between it and a classDaudio amp.
I've just ordered a SMPS500R (+/-54V) and was wondering whether this will work OK with additional banks of 3 x 6800uf/63V caps each per rail between it and a classDaudio amp.
The total capacitance which the SMPS500R can accept depends on the startup time and the over-current tripping point. If the time is set longer, the capacitors can have larger value. i can use 10000uF capacitors if need, then the number of the caps can be reduced.
please contact me by mail regarding your order.
please contact me by mail regarding your order.
excellent 🙂
some ot the tk2050 driven amps use STA517B power chip which requires up to 48V. Can the output range be adjusted to power this chip ?
also, what is the size ?
thanks.
from the other ConnexElectronics thread:
Cristi: "24V to 30V DC up to 20A high efficiency, small size, 100x110x40mm SMPS available."
col.
Cristi: "24V to 30V DC up to 20A high efficiency, small size, 100x110x40mm SMPS available."
col.
Hi Cristi!
Ive been sniffing around in your shop, but i cannot seem to find any SMPS`s fitting my subwoofer amp. I need +- 65-75vdc for this ones at around 800-1000w. I see you mention you have some coming up. Anytime soon?
Ive been sniffing around in your shop, but i cannot seem to find any SMPS`s fitting my subwoofer amp. I need +- 65-75vdc for this ones at around 800-1000w. I see you mention you have some coming up. Anytime soon?
The A1000SMPS has the default output voltage in range of +-45 to +-60V. on request, other voltage values can be provided, up to +-90V DC. also, the SMPS2000R can provide such voltages, from +-40V to more than +-100V. for this, the output voltage must be confirmed upon order, since depends on the transformer turns ratio, and can be adjusted about 10% from the value which was set.
Okey, thanks for such fast answer. Is the price of a custom voltage same, or is it an extra charge?
The price is same, but you have to send me a mail regarding the desired voltage to prepare the transformer for that.
one question about the new single voltage smps was unanswered: can it be changed to deliver 48V ? thanks
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.
SMPS500R-24 with 48V, 72V and on request other values available: Connexelectronic
I changed the product name from SMPS500R-24 to SMPS500R-Single.
I changed the product name from SMPS500R-24 to SMPS500R-Single.
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?
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...
Also maybe your existing dual voltage +-24V A350SMPS could be used as single voltage 48V power source?
Just thinking loud...
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. 😎
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. 😎
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"
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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