1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

"1.5V AA" 3 months continuously night lamp

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by TDA2030, Nov 5, 2009.

  1. TDA2030

    TDA2030 New Member

    Joined:
    Oct 26, 2009
    Messages:
    28
    Likes:
    0
    This circuit is usable as a Night Lamp when a wall mains socket is not available to plug-in an ever running small neon lamp device. In order to ensure minimum battery consumption, one 1.5V cell is used, and a simple voltage doubler drives a pulsating ultra-bright LED: current drawing is less than 500µA.
    An optional Photo resistor will switch-off the circuit in daylight or when room lamps illuminate, allowing further current economy.
    This device will run for about 3 months continuously on an ordinary AA sized cell or for around 6 months on an alkaline type cell but, adding the Photo resistor circuitry, running time will be doubled or, very likely, triplicated.

    circuit and component list link:-
    Battery-powered Night Lamp - RED - Page44

    I made it but not working can any one help me plzzzzzzzzzz:confused:
     
  2. kchriste

    kchriste New Member Forum Supporter

    Joined:
    Jul 23, 2006
    Messages:
    3,677
    Likes:
    47
    Location:
    Victoria BC, Canada
    Don't double post! :mad:
     
    Last edited: Nov 5, 2009
  3. TDA2030

    TDA2030 New Member

    Joined:
    Oct 26, 2009
    Messages:
    28
    Likes:
    0
    ohh ok i am so sorry for this double post,i am new for posting,
    i am not going to do that again,
    n i am so sorry again
     

Share This Page