Constant coltage on latching relay

Discussion in 'General Electronics Chat' started by Foulkesey, May 8, 2015.

  1. Foulkesey

    Thread Starter New Member

    May 8, 2015
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    Hi guys,

    I want to install a dual coil latching relay, only problem is the voltage to the coils will not be pulse they would be constant but i also require relay to latch once all power is off.

    Is this possible?

    Cheers joe
     
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    The dual coil latching relays are not usually designed to have their coil powered continuously, and will likely overheat if you do so.
     
  3. Foulkesey

    Thread Starter New Member

    May 8, 2015
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    Ok thanks, have you any ideas what else i could do, i need to add a relay controlled by 2 seperate switches with constant voltage, yet needs to latch in position once all power is off? Cheers
     
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    Just use a momentary, spring-return, pushbutton switch to pulse each side of the latching relay.
     
  5. Foulkesey

    Thread Starter New Member

    May 8, 2015
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  6. crutschow

    Expert

    Mar 14, 2008
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    How exactly are the two switches supposed to control the relay?
     
  7. Foulkesey

    Thread Starter New Member

    May 8, 2015
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    image.jpg
    This is what i have found i just need NO/NC contact i have 2 x seperate 12v switch lives to control the coil on the relay but i need latching for when there is no power
     
  8. crutschow

    Expert

    Mar 14, 2008
    13,000
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    If you explain exactly what you are trying to do, then perhaps we can suggest the best approach.
    Why do you need it latched when power is removed?
     
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