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Old 16th March 2006, 03:04 PM   #1
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Default Best SMPS for Gainclone

Hi.

I am looking to find a ready built switch mode PSU for a gainclone. I think i need the following spec:

+/-20V with 6A on both positive and negative legs.

Can anyone let me know if I am correct in these requirements and if so, where I can buy one? I would hope to go to 2 PSU's in the future.

Thanks.
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Old 16th March 2006, 03:19 PM   #2
Garnett is offline Garnett  United Kingdom
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Why not PM Nuuk? He's got some. He rates them very highly . I'm tempted myself.
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Old 16th March 2006, 07:52 PM   #3
t. is offline t.  United Kingdom
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You should try a couple of NUUK's SMPS, I've built several different PSU's for my GC's and Amp3, to my ears the SMPS was my favourite
Its worth adding around a 10,000uf cap on the output, this works quite well
They are a good price too!
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Old 12th January 2007, 12:24 PM   #4
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exactly how should one go about adding that cap on the output?
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Old 12th January 2007, 12:26 PM   #5
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you can buy a 48V switching supply -- always for sale on EBay -- then configure the GC as single-supply as National Semi describes. The performance isn't much different vis a vis a bipolar supply.
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Old 14th January 2007, 12:30 AM   #6
gootee is offline gootee  United States
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Quote:
Originally posted by jackinnj
you can buy a 48V switching supply -- always for sale on EBay -- then configure the GC as single-supply as National Semi describes. The performance isn't much different vis a vis a bipolar supply.

I guess that if someone thought that they had to have dual supplies, they could always split the 48v into +/-24v, using another chipamp to make a power supply "splitter", with a circuit something like what is shown in the LM675 datasheet (The LM675 is almost identical to the LM1875. But something very similar should work with almost any amp chip.).

- Tom Gootee

http://www.fullnet.com/~tomg/index.html

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Old 3rd June 2009, 11:42 PM   #7
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Any thoughts on whether this SMPS would work well for a 3886 gainclone? The price is right.


http://www.bgmicro.com/index.asp?Pag...D&ProdID=12940
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Old 4th June 2009, 01:22 AM   #8
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Quote:
Originally posted by bcrescen
Any thoughts on whether this SMPS would work well for a 3886 gainclone? The price is right.


http://www.bgmicro.com/index.asp?Pag...D&ProdID=12940

Run, don't walk -- that's a great deal!!!!!*

* when I was a life-guard I used to day the exact opposite -- nothing worse than a bloodied 10 year old.
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Old 4th June 2009, 08:04 AM   #9
bichi is offline bichi  United States
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Complete PN: Cosel PBA150F-24

Datasheet: (page 13~14)
http://www.cosel.co.jp/en/products/p..._PBA10-150.pdf

Manual:
http://www.cosel.co.jp/en/products/pdf/CME_PBA-PBW.pdf

Test Data:
http://www.cosel.co.jp/dl/dl.php3?f=...=PBA&s=PBA150F

Spec Highlights:
Efficiency(%): 85typ
Power Factor(%): 99 typ
LINE REGULATION[mV]: 96max
LOAD REGULATION[mV]: 150max
RIPPLE[mVp-p] 0 to +50C: 120max
RIPPLE NOISE[mVp-p] 0 to +50C: 150max
DRIFT[mV]: 96max
OUTPUT VOLTAGE ADJUSTMENT RANGE[V]: 19.2 - 27.0vdc


Just ordered two, shipping, USPS Priority: $12.93 to Silicon Valley, Calif
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Old 4th June 2009, 08:43 AM   #10
bichi is offline bichi  United States
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additional info:

From Manual, page 8:
4.1 Series Operation
- You can use a power supply in series operation. The output current
in series operation should be lower than the rated current of a
power supply with the lowest rated current among power supplies
that are serially connected. Please make sure that no current exceeding the rated current flows into a power supply.

4.2 Parallel Operation/Master-slave Operation
PBA10F, PBA15F, PBW15F, PBA30F, PBW30F, PBA50F, PBW50F, PBA75F, PBA100F and PBA150F
- Parallel operation is not possible.
- Redundancy operation is available by wiring as shown below.
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