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Class D Switching Power Amplifiers and Power D/A conversion

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Old 30th October 2004, 06:09 PM   #131
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Default Off Topic

I tried to start a new thread and my browser says I should use the search function....

Any help appreciated.

DNA
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Old 17th November 2004, 02:19 AM   #132
GregD is offline GregD  United States
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Question A and T Labs SMPS?

Searching around I found this company has an amplifier kit with a switching power supply. I was thinking that their switching power supply might work quite nicely with either the Zappulse or UCD amp modules. What do you think? Anyone have any experience with A and T Labs?
http://www.a-and-t-labs.com/K6_Sw_Amp/index.htm

Maybe I should post this in one of the Zappulse or UCD threads, but this thread seemed to be the most pertinent.
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Old 17th November 2004, 06:56 AM   #133
koldby is offline koldby  Denmark
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Hi

Maybe this an even better deal for switching power supply for UcD:
http://www.cadaudio.dk/pwmpricelist.htm


Koldby
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Old 17th November 2004, 07:39 AM   #134
Golgoth is offline Golgoth  France
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Quote:
Originally posted by koldby
Hi

Maybe this an even better deal for switching power supply for UcD:
http://www.cadaudio.dk/pwmpricelist.htm


Koldby
Would be if they sold them separate, look at their bottom line:
"NB Switch Mode Power Supplies are sold only together with our class-d/pwm amplifiers"
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Old 17th November 2004, 07:46 AM   #135
koldby is offline koldby  Denmark
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Ups...

Didn't notice that, but I have phoned them and I am waiting for a possible explanation for this.

I don't understand why they refuse to make a business out of selling SMPS???

Koldby
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Old 17th November 2004, 03:36 PM   #136
GregD is offline GregD  United States
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http://www.cadaudio.dk/pwmpricelist.htm

It looks like they sell the SMPS separately. On the above page they show a 1600VA SMPS for 256 euros. My concern was that the lowest output voltage they show is 60V. Would this be safe for the UCD400 modules since that is their max voltage?
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Old 17th November 2004, 04:01 PM   #137
Golgoth is offline Golgoth  France
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Quote:
Originally posted by GregD
http://www.cadaudio.dk/pwmpricelist.htm

It looks like they sell the SMPS separately. On the above page they show a 1600VA SMPS for 256 euros. My concern was that the lowest output voltage they show is 60V. Would this be safe for the UCD400 modules since that is their max voltage?
If the UcD400's OV detection trips (which it probably won't), you can always deactivate it.

But I wouldn't be so confident cadaudio will sell the SMPS separately, you better ask them.
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Old 17th November 2004, 04:21 PM   #138
GregD is offline GregD  United States
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Oops, even after your prior post, I didn't read all the way to the bottom where it says that they don't sell the SMPS separately.

So, any opinions about the A and T Labs SMPS? I've checked with them, and they are willing to sell it separately from their amps.
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Old 17th November 2004, 04:24 PM   #139
GregD is offline GregD  United States
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Also, here in the U.S., with the current exchange rate, the A and T SMPS and cadaudio 1600VA SMPS prices are about the same.
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