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PICList Thread
'Deriving 5V and 10 V from mains'
1997\02\03@195859 by Chong Wei Pang

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Has anybody has any suggestion or schematics on how to derive 5V and 10V
from
the mains?


spam_OUTchongwpTakeThisOuTspamadroit.com.sg

1997\02\03@211415 by Steve Hardy

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> From: Chong Wei Pang <.....chongwpKILLspamspam@spam@ADROIT.COM.SG>
>
> Has anybody has any suggestion or schematics on how to derive 5V and 10V
> from
> the mains?

Yes, but only if you give more of the tiny details like how much current,
whether isolated from the mains, how big, how accurate, what components
do you have already, etc. etc.

Regards,
SJH
Canberra, Australia

1997\02\04@002318 by Joe McCarron

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Chong Wei Pang wrote:
>
> Has anybody has any suggestion or schematics on how to derive 5V and 10V
> from
> the mains?
>
> chongwpspamKILLspamadroit.com.sg
How about a simple AC-DC converter ?
Joe McCarron

1997\02\04@045709 by Janusz J. Mlodzianowski

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> Chong Wei Pang wrote:
> >
> > Has anybody has any suggestion or schematics on how to derive 5V and 10V
> > from
> > the mains?

Check MAXIM ICs, they offer a range of chips which supply voltages
directly off mains..

1997\02\04@075823 by David Tait
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chongwp@adroit.com.sg wrote:

> Has anybody has any suggestion or schematics on how to derive 5V and
>10V from the mains?

Is this a trick question?  If you mean without using a transformer
then Microchip (this is the PICLIST after all) has a technical brief
that explains how to build transformerless supplies here:

http://www.microchip2.com/lit/appnote/91008a.pdf

David
--
http://www.man.ac.uk/~mbhstdj

1997\02\04@081237 by Clyde Smith-Stubbs

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> .....chongwpKILLspamspam.....adroit.com.sg wrote:
>
> > Has anybody has any suggestion or schematics on how to derive 5V and
> >10V from the mains?

Maxim have a single chip rectifier/zener designed for this application,
see http://www.maxim-ic.com/PDF/1552.pdf

--
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