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:: Sustainable Energy Notes

solar jewelry

Thursday, March 8th, 2007

Leif and I have been working on Solar Jewelry circuits.
We started with a simple Miller Engine Circuit that drives a pager motor. An idea that we are exploring is to use this very simple circuit to create moire patterned broaches that spin when exposed to sunlight.

Another idea that we are interested in are drop […]

Wearable WindFarms

Tuesday, February 6th, 2007

Problem:
I want to harness the potential for surplus energy available in our daily activities.
Walking outdoors in a windy urban environment.
Solution:
A line of wearable wind-farm clothing – for the fashionably sustainable urbanite. Small propellers act as mini wind turbines, harnessing the power of wind while you stroll around outside. Make a fashion statement, be […]

More Notes: Capacitors and Batteries

Tuesday, January 30th, 2007

Multiple sources of power, charging:
One diode in series (positive in) to the source, so that power doesn’t leak out.
Solio is a commercial product:
http://www.powderfin.com/index.asp?PageAction=VIEWCATS&Category=64&gclid=CNDT45vtiIoCFSbUgAodrA3dew
Charged monitor circuit.
Dangers involving batteries and capacitors (lithium ion batteries are not advisable for beginners).
MAXIM IC (charger) for polymers as well as ions.
High amperage rating for the lith batteries – if you short […]

Notes on Energy

Tuesday, January 30th, 2007

pumped Hydro — the best solution that we have for excess energy storage
Biggest problem being addressed is the storage of energy
From leif: proposal from Laura Bush — program that creates merry-go-rounds to pump water in a reservoir?
Leif’s experiments (results):
The shake flashlight: 3 volt .01 milliamps
Angela and Megan:
Salad spinner (acts like a gear box) through greaing […]

Notes on an oscilloscope

Tuesday, January 30th, 2007

On the trigger — set it to close to 0
There are x/y coordinates
Watch out for the corresponding measurements on the lead of the scope as well as the body.
Why is the oscilloscope useful? The multimeter updates so slowly that the scope allows for you to get better descriptions of your conditions.
Tabs next to the […]