can anyone tell me what part is this???

Discussion in 'General Electronics Chat' started by rezash1390, Oct 8, 2013.

  1. rezash1390

    Thread Starter New Member

    Dec 21, 2009
    1
    0
    Hi
    I received a HW from the teacher, asking to tell the name and usage of some parts.
    but i couldn't find these parts anywhere!!! (I searched Google, really!)
    can someone please tell me what parts are these?
    1.
    [​IMG]
    2.
    [​IMG]
    3.
    [​IMG]
    4.
    [​IMG]
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    2 is an LDR (light dependent resistor)
    3 is an LED
     
  3. adamclark

    Member

    Oct 4, 2013
    472
    6
    number one is a relay contact normally closed
     
  4. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,393
    497
    4. NPN Bipolar Junction Transistor.
     
  5. SgtWookie

    Expert

    Jul 17, 2007
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  6. #12

    Expert

    Nov 30, 2010
    16,298
    6,811
    I'd say 1 and 4 are not "standard", but that's why you asked people that have a lot of experience.:)

    Glad to be of assistance.
     
  7. radiohead

    Active Member

    May 28, 2009
    474
    31
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