Cgs synth

Yes, there is a problem doing that. Resistors control current, not voltage.
You could add a 7812 and a 7912 regulator from the output of the +/-15 to
give you +/-12V

Ken

>Hi there. I've just wondered if there is any problem that making a +/-12V

from a +/-15V power supply by simply inserting some registers, I want to use
both voltages so that I can mix some modules which I've taken from several
designers.

>
>Kind Regards
>
>--- In cgs_synth@yahoogroups.com, "fuyuhiko" <hiko_goldenballs@...> wrote:
>>
>> Thanks Dave for the information.
>> I will plan what exactly I want to build.
>>
>> Cheers
>>
>> --- In cgs_synth@yahoogroups.com, Dave Kendall <davekendall@> wrote:
>> >
>> > MOTM used to make a PSU complete with front panel as a kit, (MOTM 900)
>> > using a power one HBB15. (0.8A per rail)
>> > Not sure if it is still being sold, but power-one's are dead easy to
>> > wire up - basically just mains wire, socket and fusing, and then run
>> > the ±15V to the distro board of your choice :-)
>> >
>> > Google should show up plenty of info on how to do it.
>> >
>> > cheers,
>> > Dave
>> >
>> > On 19 Sep 2012, at 13:16, fuyuhiko wrote:
>> >
>> > > Thank you for the reply. Is the Power-one used for each synthesizers
>> > > by encasing with circuits or does anyone make a power supply with it?
>> > >
>> > > --- In cgs_synth@yahoogroups.com, "goldencardigan" <dean.lowe@>
>> > > wrote:
>> > > >
>> > > > Also keep an eye on ebay for power-one or condor brand linear power
>> > > supplies. Lots of DIY'ers use them. You will spot one or two hiding in
>> > > back of Fonitroniks racks on his website. You can find them in lots of
>> > > different volatges and up to 1.5amps. Reasonably easy to wire up.
>> > > >
>> > > > --- In cgs_synth@yahoogroups.com, "fuyuhiko" <hiko_goldenballs@>
>> > > wrote:
>> > > > >
>> > > > > Thanks for all generous replies, it's very helpful and I've been
>> > > relieved.
>> > > > >
>> > > > > The linear power supply seems not bad, but can be confusing as
>> > > Ove said.
>> > > > > I will consider buying either Doepfer one or customizing the
>> > > linear power supply to be easily used.
>> > > > >
>> > > > > Thank you very much and good luck for your inventions.
>> > > > >
>> > > > >
>> > > > >
>> > > > > --- In cgs_synth@yahoogroups.com, "roglok" <roglok@> wrote:
>> > > > > >
>> > > > > > These seem to be quite popular too:
>> > > > > >
>> > > > > > http://www.tiptopaudio.com/zeuspwr.php
>> > > > > >
>> > > > > > although, like the Doepfer, they provide only +/-12V...
>> > > > > >
>> > > > > > Here's an example for a pre-built 15V PSU, but be aware that it
>> > > only delivers 500mA:
>> > > > > >
>> > > > > > http://www.blacet.com/misc.html
>> > > > > >
>> > > > > > --- In cgs_synth@yahoogroups.com, Ove Ridé <nitro2k01@> wrote:
>> > > > > > >
>> > > > > > > On 15 September 2012 23:09, fuyuhiko <hiko_goldenballs@>
>> > > wrote:
>> > > > > > > > Hello there.
>> > > > > > > >
>> > > > > > > > This is totally newbee question. I'm thinking of buying a
>> > > linear power
>> > > > > > > > supply to get DC +/-15V as building a power supply seems
>> > > difficult for me.
>> > > > > > > >
>> > > > > > > > For instance;
>> > > > > > > >
>> > > > > > > >
>> > > http://www.conrad-uk.com/ce/en/product/511815/VOLTCRAFT-VLP-2403-240W-
>> > > DC-Power-Supply-Linear/2110330&ref=list
>> > > > > > > >
>> > > > > > > > But Im not sure if using this type of supply is efficient
>> > > for the future
>> > > > > > > > use.
>> > > > > > > > Is there any drawback of using this type of power supply?
>> > > > > > > >
>> > > > > > > > Please let me know if you have any opinions.
>> > > > > > > > I live in the UK.
>> > > > > > >
>> > > > > > > Hello. That's a lab power supply. If you intend to do any
>> > > kind of
>> > > > > > > eletronical prototyping work, you should have one. You won't
>> > > regret
>> > > > > > > getting it. I am not familiar with the quality of that brand,
>> > > but the
>> > > > > > > specs look ok.
>> > > > > > >
>> > > > > > > However, It would be a bit inconvenient to power a synth
>> > > system from a
>> > > > > > > lab power supply. You need to plug in cables for every time
>> > > you want
>> > > > > > > to use it, and not confuse the + and - cables, etc. For daily
>> > > use, I
>> > > > > > > would probably recommend something like the Doepfer A100 kit.
>> > > > > > >
>> > > > > > > http://www.doepfer.de/a100_DIY_kits.htm
>> > > > > > >
>> > > > > > > --
>> > > > > > > /Ove
>> > > > > > >
>> > > > > > > Blog: <http://blog.gg8.se/>
>> > > > > > >
>> > > > > > > "Here is Evergreen City. Evergreen�¿ is the color of
>> > > green forever."
>> > > > > > >
>> > > > > >
>> > > > >
>> > > >
>> > >
>> > >
>> > >
>> >
>>
>
>
>
>
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>
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>
>
>
>

_______________________________________________________________________
Ken Stone sasami@... otherunicorn@...
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