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WTB intensity LED — Parallax Forums

WTB intensity LED

ArchiverArchiver Posts: 46,084
edited 2000-04-21 00:35 in General Discussion
I am making a battery powered stamp project and need very bright LEDs that
pull the least amount of current possible. my battery budget allows for
about 1 ma of current.

I currently am using red but will probably change to yellow or white or
whatever the human eye is most sensitive to.

I also need then to be diffused.

anybody out there have the inside scoop on super high efficient and super
bright LED

I need about 20 to 30 pieces


thanks

richard

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-04-19 20:48
    At 11:58 AM 4/19/00 -0500, dakota promulgated:
    >
    > I am making a battery powered stamp project and need very bright LEDs that
    >pull the least amount of current possible. my battery budget allows for
    >about 1 ma of current.
    >
    >I currently am using red but will probably change to yellow or white or
    >whatever the human eye is most sensitive to.
    >

    The human eye is most sensitive to green.

    >I also need then to be diffused.
    >
    >anybody out there have the inside scoop on super high efficient and super
    >bright LED
    >
    >I need about 20 to 30 pieces
    >
    >
    >thanks
    >
    >richard
  • ArchiverArchiver Posts: 46,084
    edited 2000-04-19 22:56
    At 11:58 AM 4/19/00 -0500, you wrote:
    >
    > I am making a battery powered stamp project and need very bright LEDs that
    >pull the least amount of current possible. my battery budget allows for
    >about 1 ma of current.

    Good luck! Even the super efficient HLMP-xxxx series pull 2-3mA and
    they're tiny (3mm). Don't know what they rate MCD-wise but I guess they're
    about average brightness for their size.

    Best, Duncan
  • ArchiverArchiver Posts: 46,084
    edited 2000-04-21 00:35
    I think the eye is most sensitive to green light. 1ma is not much. A
    blinking LED might get peoples attention better.
    -William
    Original Message
    From: dakota <umc@i...>
    To: <basicstamps@egroups.com>
    Sent: Wednesday, April 19, 2000 12:58 PM
    Subject: [noparse][[/noparse]basicstamps] WTB intensity LED


    >
    > I am making a battery powered stamp project and need very bright LEDs
    that
    > pull the least amount of current possible. my battery budget allows for
    > about 1 ma of current.
    >
    > I currently am using red but will probably change to yellow or white or
    > whatever the human eye is most sensitive to.
    >
    > I also need then to be diffused.
    >
    > anybody out there have the inside scoop on super high efficient and super
    > bright LED
    >
    > I need about 20 to 30 pieces
    >
    >
    > thanks
    >
    > richard
    >
    >
    >
    >
    >
    >
    >
    >
    >
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