Powering an iPod: What You Need to Know

Thread starter professor
Start date May 21, 2006

May 21, 2006

professor

which does an appliance sich as a ipod run off of..?

i know verry little of such things =(

Engineering news on Phys.org

Engineers create first artificial neurons that could directly communicate with living cells
Light-triggered process lets 3D printers create custom glass structures without glue or high temperatures
3D printing becomes stronger and more economical with light and AI

May 21, 2006

Integral

Staff Emeritus

Science Advisor

Homework Helper

Gold Member

Internally most electronic devices (including the ipod) use DC. The wall wort is an AC to DC converter.

Thread 'Where is my curb stop?'

My water meter is submerged under water for about 95% of the year. Today I took a photograph of the inside of my water meter box because today is one of the rare days that my water meter is not submerged in water. Here is the photograph that I took of my water meter with the cover on: Here is a photograph I took of my water meter with the cover off: I edited the photograph to draw a red circle around a knob on my water meter. Is that knob that I drew a red circle around my meter...

View full post »

Thread 'Questions about the Tesla turbine'

Hi all, i have some questions about the tesla turbine: is a tesla turbine more efficient than a steam engine or a stirling engine ? about the discs of the tesla turbine warping because of the high speed rotations; does running the engine on a lower speed solve that or will the discs warp anyway after time ? what is the difference in efficiency between the tesla turbine running at high speed and running it at a lower speed ( as fast as possible but low enough to not warp de discs) and: i...

View full post »