Which type of ECM is this ?

Discussion in 'General Electronics Chat' started by lordeos, Dec 2, 2015.

  1. lordeos

    Thread Starter Member

    Jun 23, 2015
    33
    1
    Hi all,

    Recently i bought some ECM (microphones) to experiment with them ... I didn't knew (at that time) there are two types (2 pole : + side is also output) and (3 pole : + side and output are seperated). I included a picture of the ECM i bought in attachment.

    Can someone tell me if its a 2 pole or a 3 pole and whats the + and - side ?

    Info :
    - 1 of the pins is raised (left pin)

    Thx Mike
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,974
    744
    I would say its a 3 pole, the raised pin could be the supply, the case will be the ground,
     
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