[sdiy] Small Internal Power Supply Recommendation?

[Daniel Araya]

> Date:          Sat, 18 May 2002 10:41:56 +1000
> To:            daniel.araya at sth.SR.SE
> From:          Simon <simon at austarmetro.com.au>
> Subject:       Re: [sdiy] Small Internal Power Supply Recommendation?


> >I have built a small  +/-12v powersupply for a minisynthesizer. It is
> >5x6,5x3 centimeters including mains transformer, smoothing
> >capacitors, connection terminals and a fuse . It is built on
> >veroboard and uses selected 7812 and 7912 voltage regulators.
> 
> Hi,
> 
> Any idea if it can be modified for +-15 instead of 12?
> 
> Does it work at 240VAC?
> 
> If so, could I get hold of your design?
> 
> Thanks,
> Simon
> Canberra
> AUSTRALIA

Hi!

The design is straight out of the appnotes/datasheet for the 
78xx/79xx voltage regulator. It is very easy to build one for +/-15v, 
just use the 7815 & 7915 voltage regulators and use a suitable 
transformer that outputs about 2 x 18 volts AC. My unit runs of 240v 
(I live in Sweden)

regards

/Daniel