3 Terminal Transformer in voltage regulator.

Discussion in 'General Electronics Chat' started by Chetan22339, Mar 14, 2015.

  1. Chetan22339

    Thread Starter New Member

    Mar 14, 2015
    3
    0
    Hi,
    I was studying a voltage regulator circuit.
    In that I found a small transformer of 3 terminals. So can anyone tell me about its use and function of terminals.

    the terminals were connected to diode 1N4007, transistor,resistor in parallel with capacitor.
    The circuit was also used to charge battery(1000mAh) and 1.1V.
    The output voltage of circuit is 1.2V.
    Thank You.
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,148
    1,791
    You don't really expect us to visualize a circuit from a verbal description do you? A schematic diagram is essential. A voltage regulator is a DC circuit and transformers don't work on DC. Now if any part of that transformer is connected to the mains it is inherently UNSAFE, because it provides no isolation.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,998
    745
    sounds like a Time machine local oscillator, is there a yellow Flux capacitor as well...
     
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  4. Reloadron

    Active Member

    Jan 15, 2015
    963
    232
    Yellow was only used pre Y2K, now in accordance with MIL-D-41 they are blue.

    Chetan22339, really it could have been any number of circuit designs using a center tapped transformer. Without seeing a drawing/schematic it is impossible to say.

    Ron
     
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  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,542
    1,251
    The blue color comes from a change from unobtanium to Angelonium as the base material. This changed some of the performance characteristics, more than can be accommodated by a Detail. The correct spec is MIL-STD-41/B

    ak
     
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  6. Rocket.Man

    New Member

    Jan 1, 2012
    20
    7
    Your probably talking about an auto transformer. 2 windings connected in series. 1 terminal is common to both windings.
     
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  7. PeterCoxSmith

    Member

    Feb 23, 2015
    148
    38
    sounds like an auto-transformer, they have a common terminal - they provide no isolation.
     
  8. atferrari

    AAC Fanatic!

    Jan 6, 2004
    2,648
    764
    Maybe you have seen this

    Could you show the schematic or whatever you looked at?
     
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