[sdiy] 723-based power supply around 400ma

groovyshaman groovyshaman at snet.net
Fri Mar 7 05:08:49 CET 2008


That's a screaming deal Tom.  But that HAA frame is too large.  I'm 
looking for a PSU that can mount behind a 2U panel in my SKB pop-up 
mixer case that will allow room for some additional circuitry such as an 
output mixer, small speaker w/amp, etc.  The HAA is 4" x 6.5" and 2.5 
lbs.  I could mount the 4" side to the panel but then I'm thinking the 
depth is too great for its weight and could bend the panel (or frame). 
The HAD frame (400ma unit) would be good (4" x 4.5") but it's not the 
same quality (guess I'm just being picky).  My power budget is around 
300ma so a 400ma PSU is about right.

-George

Tom Farrand wrote:
> How does $15 sound for +-15V at 0.8A?  Yes, it is 723-based.  I have
> two of them from Skycraft and they were perfect.
> 
> Here is the link:
> http://www.skycraftsurplus.com/index.asp?PageAction=VIEWPROD&ProdID=439
> 
> Not 400mA but still pretty small.  Or did you need smaller yet?
> Additional detail of the application or other constraints might give
> better answers.
> 
> Peace.
> Tom Farrand
> 
> 
> On Wed, Mar 5, 2008 at 10:32 PM, mike ruberto <somnium7 at gmail.com> wrote:
>> I can't think of any that use the 723 anymore. However, a 723 based
>> supply for 400ma would consist of a 723 and maybe a 2N2222 or TIP31.
>> Not hard at all to work up if you change your mind about DIYing it.
>>
>> Mike
>>
>>
>>
>>
>> On Wed, Mar 5, 2008 at 11:08 PM, groovyshaman <groovyshaman at snet.net> wrote:
>>> Does anyone know of a supplier for a 723-based power supply that is
>>>  rated around 400ma?  Power-One and International-Power are both
>>>  3-terminal based designs at that current spec.  I would prefer to NOT
>>>  build my own if possible.
>>>
>>>  -George



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