How does a solar cell also recharge under incandescent light?

Thread: How does a solar cell also recharge under incandescent light?

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  1. #1
    Member G-Shocks Are Cool.'s Avatar
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    Question How does a solar cell also recharge under incandescent light?

    I thought solar cells need UV Rays to work?



    Technology really is amazing.

  2. #2
    Member bluegum's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    The solar cells are very sensitive these days.

    Any light source can charge the solar cell battery, but artificial lights are far, far weaker than natural sunlight or even ambient natural light.

  3. #3
    G-Shock & Sales Moderator DragonJade's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    The majority of solar cells rely on photons to work. There are some which use UV or IR, and are newer technologies.

    http://en.wikipedia.org/wiki/Solar_cell for more information.
    Last edited by DragonJade; February 20th, 2009 at 07:03. Reason: typo

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  5. #4
    Member G-Shocks Are Cool.'s Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    By how many years are they more sensitive?

    I own a MTG930DA which is about five years old and a GW5600J that is about less then a year ago.

    Is my GW5600J more sensitive then my MTG930DA?

  6. #5
    G-Shock & Sales Moderator DragonJade's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    The only way to know for sure is to ask Casio or to take your watch apart and to measure directly. Don't forget that different watches have different power consumption needs. Take for example the antenna for picking up the atomic signal. That has shrunk quite a lot since they first come out.

    According to the G-Shock Bible:
    1999
    100% solar face coverage
    3.15uA power generated

    2003
    53% solar face coverage
    1.95uA power generated

    2006
    117% solar face coverage
    1.49uA power generated

    These figures are for different watches, so you can only get a general idea. Also, you have to consider that the design of the watch may require all of the face of the watch to be covered in solar cells, but the watch doesn't actually need so much power so they can use cheaper/less dense/lower efficient cells.

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  7. #6
    Member G-Shocks Are Cool.'s Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    Thank you.

    I learned alot.

  8. #7
    Member Joakim Agren's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    Quote Originally Posted by DragonJade View Post
    The only way to know for sure is to ask Casio or to take your watch apart and to measure directly. Don't forget that different watches have different power consumption needs. Take for example the antenna for picking up the atomic signal. That has shrunk quite a lot since they first come out.

    According to the G-Shock Bible:
    1999
    100% solar face coverage
    3.15uA power generated

    2003
    53% solar face coverage
    1.95uA power generated

    2006
    117% solar face coverage
    1.49uA power generated

    These figures are for different watches, so you can only get a general idea. Also, you have to consider that the design of the watch may require all of the face of the watch to be covered in solar cells, but the watch doesn't actually need so much power so they can use cheaper/less dense/lower efficient cells.

    I dont understand those numbers, it appears as if they generated more power in 1999. I was under the impression it is supposed to be the other way around. I also wonder why they selected 1999 as the start year when the Raysman came out in 1998 which was the first?
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  9. #8
    Member Queen6's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    Quote Originally Posted by Joakim Agren View Post
    I dont understand those numbers, it appears as if they generated more power in 1999. I was under the impression it is supposed to be the other way around. I also wonder why they selected 1999 as the start year when the Raysman came out in 1998 which was the first?
    No expert on Casio`s solar technologies, however generally speaking manufactures have been steadily reducing the power consumption of electronics, so a small power source/capacity in the solar watches would make sense.

    Q6

  10. #9
    G-Shock & Sales Moderator DragonJade's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    Quote Originally Posted by Joakim Agren View Post
    I dont understand those numbers, it appears as if they generated more power in 1999. I was under the impression it is supposed to be the other way around. I also wonder why they selected 1999 as the start year when the Raysman came out in 1998 which was the first?
    OK, these are all the figures in full. I only put up three before as an example:

    1999
    100% solar face coverage
    3.15uA power generated

    1999
    87% solar face coverage
    2.75uA power generated

    2001
    71% solar face coverage
    2.25uA power generated

    2003
    53% solar face coverage
    1.95uA power generated

    2005
    49.43% solar face coverage
    1.85uA power generated

    2006
    117% solar face coverage
    1.49uA power generated

    From the few words I've managed to translate from the Bible, it says that "solar cells have advanced and that power consumption of G-Shocks have gone down."

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  11. #10
    Member ErermisK's Avatar
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    Re: How does a solar cell also recharge under incandescent light?

    Quote Originally Posted by DragonJade View Post
    OK, these are all the figures in full. I only put up three before as an example:

    1999
    100% solar face coverage
    3.15uA power generated

    1999
    87% solar face coverage
    2.75uA power generated

    2001
    71% solar face coverage
    2.25uA power generated

    2003
    53% solar face coverage
    1.95uA power generated

    2005
    49.43% solar face coverage
    1.85uA power generated

    2006
    117% solar face coverage
    1.49uA power generated

    From the few words I've managed to translate from the Bible, it says that "solar cells have advanced and that power consumption of G-Shocks have gone down."
    Sorry, but what does the % face coverage part mean?

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