[sdiy] dual output DC-DC converters

[harry bissell]

Ha I am the worlds foremost expert on these... having personally tested
1200 pieces individually in the past two weeks (900 of them today !!!)

They are small, quasi-regulated switchers. If you regulate the DC in they
are pretty stable.

Problem... in some cases (especially capacitive loads) they can fail to 
start
reliably. When they don't start, they give a much lower output 
voltage... and
can be CLEARLY heard in my FM receiver.

I would try them... I used them a long time ago to make a DC powered mixer
for my neighbor so his kids could play in the "Louie Louie" parade...

Yep... THAT "Louie, Louie"  :^P

H^) harry


Tim Parkhurst wrote:
> Has anybody played with these? Although they are a little pricey, they
> seem to be a nice, compact solution for getting +/-15V from a standard
> DC wall wart...
>
> >From the latest Mouser catalog:
>
> 580-NMH0515DC (2 Watts)        5V at 1A in    +/-15V at 67mA out          $14.73
>
> 580-NDTD2415  (3 Watts)         24V at .125A in   +/-15V at 100mA out         $17.80
>
> 580-HPR711  (5 Watts)              12V at .42A in   +/-15V@ 167mA out        $27.68
>
> 580-WP06R12D15N  (6 Watts)   12V at .5A in    +/-15V@ 167mA out        $30.46
>
> 580-WPN20R12D15  (20 Watts)  12V at 1.67A in    +/-15V@ 670mA out        $40.27
>
> There are all sorts of combinations of input voltages (5, 12, 15, 24
> or 48V) and +/-12VDC outputs are available too. Most of these are
> available in DIP and SMT versions. I would think the 3 Watt version
> would power two or three modules (or more). Just remember that the
> wall wart has to have enough current to run the whole mess. The input
> current rating I got from the rated power/voltage (Ohm's Law for
> current: I = W/V). I'm assuming they're tiny switchers, but most say
> they're shielded. Any comments? Has anybody actually used these?
>
>
> Tim (running on 3 Watts) Servo
> --
> "Imagination is more important than knowledge." - Albert Einstein
>
>
>
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