about switches

Discussion in 'General Electronics Chat' started by shaitan, May 22, 2004.

  1. shaitan

    Thread Starter New Member

    May 21, 2004
    sorry if i ask this question here,but i need an answer,

    how can i use one start switch to set on and off a one phase contactor(with 2 normally closed contacts and 4 normally open contacts)?

    [more than one contactors can be used to set the first on and off]

    Please help me,
  2. beenthere

    Retired Moderator

    Apr 20, 2004

    No one ever gives quite enough information for an accurate reply.

    Going on the asumption that the start switch in question is momentary in action, use it to pulse a latching relay, whose contacts control current into the contactor coil. Puch the switch once to pull in the contactor, again to drop it out.
  3. shaitan

    Thread Starter New Member

    May 21, 2004
    i already said that we can use any other contactor ,but we cannot use any relay.
    i think if we use ladder shape circuit and use 2 contactors we can on and off one of them, but it's important that how we use contacts in arms of circuit!!