Switched Mode Power Supplies (SMPS) - Page 13 - diyAudio
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Old 4th October 2010, 05:56 PM   #121
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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.
Old 4th October 2010, 06:51 PM   #122
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Originally Posted by robob View Post
Sorry, I don't understand your answer :

MY question is, can I use the SMPS250QR or may be the connexelectronic A350SMPS or any other one power supplies with my 4 x 100W tk2050 t-amp ? I suppose I need around 350 W, 24 V and 16.4 A : for example I don't found any amperage indication for the SMPS250QR and I don't know if it's important (I suppose it is ).
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.
Old 5th October 2010, 06:21 AM   #123
robob is offline robob  France
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I'll wait for the new SMPS : modifying a board is not my cup of tea (as we say in french ).
Is-that a HTPC ?
Old 19th October 2010, 05:32 AM   #124
oneday is offline oneday  Australia
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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.
Old 22nd October 2010, 12:00 PM   #125
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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.
Old 25th October 2010, 05:02 PM   #126
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The single output, high current SMPS, 24-30V available: Connexelectronic
Old 25th October 2010, 05:34 PM   #127
alkasar is offline alkasar  France
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Originally Posted by Cristi View Post
The single output, high current SMPS, 24-30V available: Connexelectronic
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 ?
Old 25th October 2010, 07:28 PM   #128
col is offline col  Australia
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from the other ConnexElectronics thread:

Cristi: "24V to 30V DC up to 20A high efficiency, small size, 100x110x40mm SMPS available."

Old 27th October 2010, 02:13 AM   #129
codegen is offline codegen  Norway
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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?
Old 27th October 2010, 02:20 AM   #130
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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.


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