Thursday is the new Wednesday, did you know? According to the new bylaw, you might have heard about this one... Okay, to be honest, we are late with the post... But doesn't that make it more exciting?! I bet it does, so here we go, the long-awaited links: Laser Origami We've got lasers. We like […]
2001 Solar Cell Analysis Data - Direct S...
Dave Hrynkiw
July 12, 2007
| Overview | ||
| At Solarbotics, we've been getting quite a few questions regarding the "real-world" performance of our solarcells. Although we do have the official Panasonic Sunceram datasheets, it is written in a quite technical manner and does not include practical design data. With that in mind, we have generated the following - the first of three sets of data for use by the BEAM community. This first set of data is taken with direct-sunlight performance in mind. The second and third sets will be measured under halogen and incandescent lighting (stay tuned...). | ||
| Data Acquisition Procedure | ||
| Solarcell voltage across resistance values recorded on June 20 between 13:07 and 13:25. Solarcell capacitor charging values for capacitors between 1000uF and 4700uF recorded on June 22 Between 13:30 and 14:00.Solarcell capacitor charging values for capacitors between .047F and 1.0F recorded on June 25 between 13:25 and 14:10.Summer solstice on June 21, maximum sunlight at 13:37 (located in Calgary, Alberta, Canada).Testing apparatus consists of a basic stamp 2 for data logging and a ADC0831 chip for analog to digital conversion, 8 bit accuracy (0.02 volt resolution). When testing multiple resistive loads, relays were used to switch the load across the solarcell with a 200ms settle time. The basic stamp controlled sequencing and data logging by measuring the voltage across each switched load.When testing the charge rate of multiple capacitors, the capacitor was shorted by a relay for a period of five seconds, then released to charge by the solarcell. Voltage readings were taken between .2 and 5 seconds, depending on estimated total charge time. An 80% open voltage line is also indicated on the graphs. |
||
| Charge Times sorted by Solar Cell | ||
|
||
| Charge Times sorted by Capacitor | ||
| Solar Cell output under Resistance | ||
| Complete Data Sheet Download | ||
| For those of you who would rather have access to the complete data sheets and charts for the 2001 Solar Cell Analysis, we provide this information in the Microsoft Excel format.Solarcell Data Sheet A - 88KB Solarcell Data Sheet B - 388KB |
||
| Disclaimer: | ||
| Although the information is provided freely, we request that any reproduction or reference to the above data be included with proper accreditation to Solarbotics Ltd. Additionally, although we have performed these tests in good faith, we do not and cannot warrantee this data in any way. | ||
MORE POSTS
Yoicks! Lotsa new stuff!
Well, the pile of stuff we've just got in finally fell on me, forcing me to deal with it. Got some neat new stuff!: GMTT Traction tires for our GMPW and SW wheels. Ideal for mini-sumo robots! GMWW02 Wheel Watcher Encoder kits for the GM2/3/8/9 series gear motors, and GMWWS spacers (needed for GM2 & […]
We've been BoingBoing'd!
Thanks to Gareth Branwyn and his 2006 Holiday Gift Guide on Street Tech our new "Herbie the Mousebot" is featured on BoingBoing. For those who don't know BoingBoing is "A Directory of Wonderful Things."
Solarbotics at the MAKE Faire
Sooo, if you're not familiar with Make Magazine, you should be! An excellent quarterly "bookzine" from O'Reilly publishing - them guys that do the computer books with the ink-line drawings of animals on the cover. I'll be down there this April 22-23, giving BEAM lectures / workshops at their MAKE Faire in San Francisco, and […]
Solarbotics has been operating for more than 25 years, bringing electronics know-how and supplies to both the electronics professional and hobbyist. We'll be happy to help you too!
Solarbotics, Ltd. is not responsible for misprints or errors on product prices or information. For more information, please see our Terms and Conditions.
Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.