How To Build A Solar Panel – Part 17 – School Series Part 4

Visit to view the full video. In this video I’m going over the following topics -What is current and voltage and how those two work together. -How current flows throughout the solar panel we built in these series of videos. -How Ohm’s Law works, and how to use different equations from Ohm’s Law. -Why I needed an analog amp meter for my syste. -Proving that the amps is what is effected when you break a solar cell and not the voltage.

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  1. #1 by Zalzal019 at August 13th, 2009

    Great video. What if there is only one broken solar cell running at 2.2 amps, will it drag down the amperage of the rest of the cells? Considering they are all in series?

  2. #2 by virlusun at August 13th, 2009

    Thanks for explaining. I am still learning with broken cells. I do too recommend to buy whole solar cells anyway you will end braking some panel while you learn. But broken cells are good to learn without expending a lot of money about how solar power works.

  3. #3 by tupac93013 at August 13th, 2009

    great videos

  4. #4 by chazsql at August 14th, 2009

    Thanks for this series of videos. You covered points that some other people skip over.

  5. #5 by Anothercoilgun at August 16th, 2009

    Current is equal at all points in a series circuit. However some rules can be bent and other can be broken 🙂

    Any cell can be overdriven. A broken cell can perform just as well and even better if that cell receives considerably more light than all other cells. How, light concentration. Using a mirror to reflect light to a panel instantly boost is power so concentrated light to a broken cell will instantly boot a broken cell. But that which shines twice as bright lives half as long.

  6. #6 by ltbig24 at September 5th, 2009

    Ok, I am lost now, Here is why I one cell make 3.5 Amps how come the the whole panel only make 3.5 A mps as well

  7. #7 by RobertSmith3 at September 5th, 2009

    That’s the max the solar cells can produce, some can produce more, but depending on how you hook up your solar cells (in series or parallel) will determine if you have the standard max Amps the solar cells can produce.

    As mentioned in the video, to have more Amps, hook up your solar cells in parallel. For more volts, hook them up in series.

    If you are still confused, I suggest visiting this forum and opening a thread about it: solarpowerforum (dot) net

  8. #8 by mkbmonkey at October 18th, 2009

    ok …one cell produces..1.75 watts…my question is ….how much time will it need to produce that much?is it …1.75 watts per minute…or what…

  9. #9 by RobertSmith3 at October 18th, 2009

    Do not think of it as time. The solar cells produce 1.75 watts when they are receiving direct sunlight. I would probably recommend you get a digital multimeter to help understand this as well.

    When you are measuring the volts/amps/watts for a solar cell, you don’t care about the time. It’s just an instant measurement.

  10. #10 by kareldezoonvanbennie at October 21st, 2009

    it’s p/hour

  11. #11 by kareldezoonvanbennie at October 21st, 2009

    the solar cells will add up , if you have 1 it 3.5 amp 0.5 v if you have 2 in series it’s 3.5 amp 1 volt if you have 2 in parallel you have 7 amp and 0.5 volt

  12. #12 by mkbmonkey at November 12th, 2009

    thx Robert…..just to let u know…’re doing a great job…..I’m only 16,yet i can still follow your instructions to the letter…..when i have the money n time…..i will definitely make my DIY solar panel….oh…and may i recommend doing videos about other DIY renewable energy? the videos in youtube are somewhat bad if not difficult to understand….

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