|
Seems like there is no end to the uses of old hard drives. This hack uses the voice coil of a used hard drive to act as a Laser Shutter.
Thanks for the tip Robo.
“We have developed a high-speed laser shutter based on voice-coil actuators found in generic hard disk drives. We have enhanced the shutter with a new driver circuit described below and a notched flag, achieving 500ns rise time and sub-microsecond pulse durations. The shutter is readily constructed from a disassembled hard drive (as shown in an early prototype in the photo above), with the addition of a simple drive circuit. A high-current opamp (e.g. L165V or OPA548) can be used, but requires a bipolar power supply, and generally some sort of pulse shaping. The circuit in our paper, designed by Sandor Szilagyi, provides very fast switching, a small holding current, and bidirectional drive from a unipolar supply.”
|
October 2nd, 2007
Someone should make a ridiculously large digital camera with that…
October 2nd, 2007
That would be cool!
October 3rd, 2007
Is there any way that you could send me the materials needed for this gadget?
October 3rd, 2007
Send you the physical stuff? Or just what is needed? If you are looking for the later please go here:
http://optics.ph.unimelb.edu.au/atomopt/shutter/shutter.html