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How do i connect a 5 pin transformer?

Discussion in 'General Electronics Discussion' started by Electro132, May 3, 2015.

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  1. Electro132

    Electro132

    261
    3
    Feb 12, 2013
    Hi,

    I want to connect a 5 pin transformer to my circuit. It converts from 1.5 V to 330 V (or more) and has 5 pins - 2 pins input and 3 output. I would like to know where each of the pins connect to? I was thinking of just cancelling the middle pin but wanted to know what it was for since i've heard of half voltages?

    Thanks
     

    Attached Files:

    Last edited: May 3, 2015
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,025
    2,138
    Nov 17, 2011
    Your diagram doesn't match the description: 3 inputs, two outputs. Which one is correct?

    Edit: both types exist and have their applications:

    1. 3 inputs, two outputs: often used to make the power supply compatible to 115 V / 230 V systems. For 115 V systems you connect the two primary windings in parallel. For 230 V systems you connect the two primary windings in series. In bot cases the same output voltage appears and power is the same (apart from little differences resulting from 50 Hz or 60 Hz systems.
    2. 2 inputs, three outputs: used with one mains voltage only (typically either 115 V or 230 V) and two output voltages. Often the center tap is defined as 0 V and the two outer taps are used to create a +/- supply.
      It can also be used to create a single supply as for example in this circuit.
     
    Last edited: May 4, 2015
    hevans1944 and davenn like this.
  3. Electro132

    Electro132

    261
    3
    Feb 12, 2013
    I got the transformer from a flash camera which converts 1.5v to 330 v. So i'm guessing it is 3 inputs and 2 outputs but i'm still trying to figure it out. I have attached the original circuit the transformer was on (both front and back) so you can see what i mean.

    flash cam 1.jpg flash cam 2.jpg flash cam 1.jpg flash cam 2.jpg
     
    Last edited: May 4, 2015
  4. Harald Kapp

    Harald Kapp Moderator Moderator

    10,025
    2,138
    Nov 17, 2011
    The circuit could be very similar to this one. You'd have to trace the circuit layout and components to create the equivalent schematic for your flash.
     
  5. Electro132

    Electro132

    261
    3
    Feb 12, 2013
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