My goal is to provide a consistent power source for the Bets1 STP. I think that imitating how a solaroller's solar cell would be best as it is clearly defined...
I've just repeated some tests on a Sunceram 2433 solar cell. The 2433 was positioned 50 cm from a single 500 watt halogen light. the solar roller rules call...
... Just so John, aka our friendly Laminar Gerbil. I am approaching my Bets1 work as building a dynamometer. It makes sense to test a solar engine using an...
J, The STP sounds good. It references a well known set of standardized conditions. I would add one clarification. The 50 cm distance is measured from the front...
I did not mean that your test setup would be a particular light and your cells are so many cm from the source. I meant something easier. Someone would...
laminar gerbil
laminargerbil@...
May 14, 2003 7:44 pm
... It's good, but considering the wear of the solar panels, I think that a simulated setup would be better. And *even better* would be to run the power for...
I found the solar simulator circuit Wilf posted in response to Tim Smith [1,2]. I have attached the file, and I have the following questions: Will this circuit...
... Circuit A would work with a 3.3v battery (not that I've seen any, two fresh AA alkaline cells ~3.2v is the closest I can think of) and a resistor value ...
I have corrected the SIMSC schematic in http://groups.yahoo.com/group/beam/files/simSC1.gif and changed some component values to lower the voltage drop across ...
Here is a correction to the original SIMSC1 circuit and some variations on the theme. SIMSC1a adds D2 so that the output current starts at 0 ma. Since the...
Wilf, SIMSC3 seems the simplest to build. What changes would be needed if a 78L05 wwas used for a more stable reference? Another question, how would the...
Hi Mic, ... From: "mycroft2152" <mycroft2152@...> To: <beam@yahoogroups.com> Sent: Friday, May 16, 2003 11:31 AM Subject: [beam] Re: How to Imitate a...
Thanks Wilf, very helpful explanation. Since most BEAMers are familiar with the 78L05 volotalge regulator, how would it's performance fit in when set up as a...
Hi Mic, This is what it would look like. The 10K pot is adjusted for currents from 0.5 ma to 100 ma. Since there is a constant 5V across the pot the current is...
Hi Wilf, just a question: can I have problem about the pot. power dissipation when the 78L05's output is near the end of potentiometer (circuit output) ? Can I...
Small trim pots would run hot. Just add a 50 ohm 1/4W resistor and a LED in series with the wiper. It gives a visual indication and reduces power in the pot....
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