SV: RE: [sdiy] Multiple Voltage Power Supply / design problem!

[Colin Hinz]

 On Tue May 15 23:31 , "Roy J. Tellason"  sent:

>I had *one* UPS that wanted a total of _ten_ small batteries for replacement,  
>as compared with typically one or two in the rest of the ones that I've 
>encountered.
>
>Too bad I can't seem to find any switchers which will accept a lower-voltage 
>DC input.

Roy,

"Lower-voltage" means how low? And what sort of outputs are you needing.

Not really off-topic:

I'm helping a friend who's building a synth installation that's powered by a stationary bicycle. The generator provides anywhere from 8V (extremely weak pedalling) to 33V (going nuts). Luckily, DC-DC converters with a 9-36V input range are readily available.

Also luckily, the synth hardware is all PAiA gear, all which internally sub-regulate the +/- 15V supplies. And thus, in our recent "dry run" test a few weeks back, we heard sweet tones instead of nasty switching noise. This weekend, we'll be testing out the installation "for real". Fingers crossed, and all that.

- Colin Hinz
  Toronto, Canada