Re: [sdiy] ±12V from +12V Linear.

[Colin Raffel]

It's possible, but kind of shady.

Take a look at RG Keen's article here:
http://geofex.com/circuits/+9_to_33.htm

You could easily create a voltage divider to get 9v, add on the  
"+25v" modification, then create a vBias at 12.5v... bam, you have  
+/-12v.  This chip does suck power and does not give much current  
output, but you may's well give it a try.

-Colin

On Jan 26, 2006, at 8:52 AM, Dave Kendall wrote:

> on 26/1/06 14:53, Paul Schreiber at synth1 at airmail.net wrote:
>
>> Nope.
>>
>> Paul S.
>
> I guess what I meant was, are there any circuits or devices that  
> will do
> this?
>
> I've got a horrible feeling what the answer is going to be....
>
> :-)
>
>
> Dave
>
>
>
>
>>
>> ----- Original Message -----
>> From: "Dave Kendall" <davekendall at ntlworld.com>
>> To: <synth-diy at dropmix.xs4all.nl>
>> Sent: Thursday, January 26, 2006 7:21 AM
>> Subject: [sdiy] ±12V from +12V Linear.
>>
>>
>> Hi all.
>>
>> Have got a N.O.S 12V 1.7 Amp +12V linear open-frame PSU made by  
>> Bulgin. I
>> was wondering if it would be possible to modify it to give ±12V?
>>
>> cheers,
>>
>> Dave
>>
>>
>
>
>