1000mA 12 V ac supply
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1000mA 12 V ac supply

 
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lovebo
Guest
Posted: Sun Nov 20, 2005 5:35 pm    Post subject: 1000mA 12 V ac supply Reply with quote
Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient, as AC is sin
wave, or do I need to clean the signal in any way.

Where do I source components?


Thanks

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Jim Gregory
Guest
Posted: Sun Nov 20, 2005 5:35 pm    Post subject: Re: 1000mA 12V ac supply Reply with quote
"lovebo" <josephhaughey@fsmail.net> wrote in message
news:1132489294.307222.172300@o13g2000cwo.googlegroups.com...
Quote:
Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient, as AC is sin
wave, or do I need to clean the signal in any way.

Where do I source components?


Thanks

Yes, a step-down tranny, at least of 12 VA rating, but add 20% to that to

run cooler. That's all.
If you live in UK, mains is officially 230V AC, by the way.
Try Farnell Electronic Components, Maplin, or Rapid Electronics.
Jim
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lovebo
Guest
Posted: Sun Nov 20, 2005 5:35 pm    Post subject: Re: 1000mA 12V ac supply Reply with quote
Thanks Jim


Jim Gregory wrote:

Quote:
"lovebo" <josephhaughey@fsmail.net> wrote in message
news:1132489294.307222.172300@o13g2000cwo.googlegroups.com...
Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient, as AC is sin
wave, or do I need to clean the signal in any way.

Where do I source components?


Thanks

Yes, a step-down tranny, at least of 12 VA rating, but add 20% to that to
run cooler. That's all.
If you live in UK, mains is officially 230V AC, by the way.
Try Farnell Electronic Components, Maplin, or Rapid Electronics.
Jim


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Peter Hucker
Guest
Posted: Sun Nov 20, 2005 5:35 pm    Post subject: Re: 1000mA 12V ac supply Reply with quote
On Sun, 20 Nov 2005 13:17:22 -0000, Jim Gregory <jim.greg@ntlworld.com> wrote:

Quote:
"lovebo" <josephhaughey@fsmail.net> wrote in message
news:1132489294.307222.172300@o13g2000cwo.googlegroups.com...
Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient, as AC is sin
wave, or do I need to clean the signal in any way.

Where do I source components?


Thanks

Yes, a step-down tranny, at least of 12 VA rating, but add 20% to that to
run cooler. That's all.
If you live in UK, mains is officially 230V AC, by the way.
Try Farnell Electronic Components, Maplin, or Rapid Electronics.

Actually it's quoted as 240V in the UK, and 220V in France. But I had heard that they had made them all within a certain band, so they were all the same throughout Europe, so suppliers can proably get away with quite a wide range nowadays.

--
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Sky have just won the rights to screen the first World Origami Championships from Tokyo.
Unfortunately it's only available on Paper View.
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Jasen Betts
Guest
Posted: Mon Nov 21, 2005 9:35 am    Post subject: Re: 1000mA 12 V ac supply Reply with quote
On 2005-11-20, lovebo <josephhaughey@fsmail.net> wrote:


Quote:
Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient,

yes.

Quote:
as AC is sin wave, or do I need to clean the signal in any way,

probably not.

Quote:
Where do I source components?

Pretty much any "electronics" retailer will have a transformer-plug
(AKA wall-wart) with 12V AC output. some will have "bare" transformers
in their parts section.

my spare modem uses a 12V AC 1A wall-wart. (1A is 1000mA)

Bye.
Jasen
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lovebo
Guest
Posted: Mon Nov 21, 2005 5:35 pm    Post subject: Re: 1000mA 12 V ac supply Reply with quote
Cheers Jason, I got a old transformer rated 12volts
I'll give it a go


Joseph
Jasen Betts wrote:

Quote:
On 2005-11-20, lovebo <josephhaughey@fsmail.net> wrote:


Hi, I need 1000mA 12V ac output from 240V ac. It is for an audio signal
processor, Will a step down transformer be sufficient,

yes.

as AC is sin wave, or do I need to clean the signal in any way,

probably not.

Where do I source components?

Pretty much any "electronics" retailer will have a transformer-plug
(AKA wall-wart) with 12V AC output. some will have "bare" transformers
in their parts section.

my spare modem uses a 12V AC 1A wall-wart. (1A is 1000mA)

Bye.
Jasen
Back to top
 
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