[sdiy] wall warts--wishful thinking

[Tim Parkhurst]

On 8/16/05, phillip m gallo <philgallo at attglobal.net> wrote:
> Regarding external linear power supplies (DC wall warts) for those in the
> State of California.  New efficiency regulations will pretty well eliminate
> the use of non-switching power supplies starting next summer.  Those who use
> AC wall warts will be ok (for the time being).
> 
> http://powerelectronics.com/mag/power_new_energy_standards/
> 
> regards,
> p
> 
********************
One thing that will definitely affect this ruling: 

"The EPSs (External Power Supplies) covered by the standard are
single-output, self-enclosed units that reside outside of the product
they power, with output voltages ranging from 1.5 V to 24 V."

It looks like these regs are targeted at battery chargers, and other
miscellaneous low volt DC supplies. According to the article, it looks
like power supplies with two (or more) outputs, or output voltages
higher than 24V will be exempt. This means that  the +/-15 wall warts
mentioned in earlier posts won't be affected. STILL, I would take this
as a warning sign that the power supply as we know it (a big, linear
dual or triple output device) is probably going to change. Yet ANOTHER
reason to learn how to properly tame the noise from a switcher for use
with synth stuff.


Tim (can I say "I told you so" yet?) Servo
-- 
"Imagination is more important than knowledge." - Albert Einstein