[sdiy] Small Internal Power Supply Recommendation?

[Tim Ressel]

Simon,

The way to make it as small as possible is to use a
'wall wart' transformer. In this case, I'd go for an
AC wall wart and use positive and negative voltage
doublers to get my dual supplies. Then its a matter of
regulation. If your draw is low, just use zeners. The
other choice is 3-terminal regulators, either
7815/7915 or LM317/337.

--TR

******************************
Helping the Helpful since 1981
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--- Simon <simon at austarmetro.com.au> wrote:
> I have just purchased two Synton 3000 modules, a
> mic/line input 
> module and HP/LP VCF module.
> 
> I want to mount these two modules in a small case,
> to use as a 
> standalone filter box.
> 
> I would like to find the smallest possible power
> supply, to keep the 
> box as small as possible.
> 
> Any recommendations for internal power supplies? It
> has to be 
> +15/0/-15 Volts and 200mA, or maybe even 100mA.
> 
> Can I use and internal power supply in a small box
> like this, or 
> should I use an external power supply, will an
> internal power supply 
> be too noisy to mount in a small case next to some
> bare module pcbs?
> 
> 
> Thanks,
> Simon
> Canberra
> AUSTRALIA


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