Converter Definition and 254 Threads

Is there any theories on taking light, and changing it to matter? Imagine a machine that could do that. Imagine instantly having a house built in front of you, in a matter of milliseconds, it's got to be the ultimate invention.

Hello, I want to make a DC to DC voltage converter so that I can "step up" the output voltage from what it is to something a little more useable. Right now it outputs about .5 volts, I was thinking that is I could step that up to around 1 or 2 (or higher, higher is no problem) volts, I could...

does anyone know where i can find a frequency to voltage converter or know how to make one? preferably using a low voltage supply... thanks!

I designed an optical A/D (on paper only) several years ago. I have no means to make one since small scale integration is required. Any ideas how to get someone interested? If it works correctly, there would be zero conversion time and only settling time for the detectors outputs.