relay circuit

Discussion in 'General Electronics Chat' started by spark8217, Jul 12, 2012.

  1. spark8217

    Thread Starter Member

    Aug 29, 2011
    64
    2
    hi guys
    could you please look over the attached circuit , i have built this on the breadboard and works correctly but putting into multisim it does not work and there representation of a relay i have never used before and need some help on tweaking the settings on the relay properties to correspond to my bread board circuit !!! unless you see any other errors also please advise below are my relay info and attached schematic.

    my actual relay specs from my breadboard are as follows
    HRS4H-S-DC 9V
    NO -10 AMP 250 V
    NC 6 AMP 250V
    10 AMP 120 VAC
    10 AMP 24 DC
    cheers
    spark 8217:)
     
  2. JohnInTX

    Moderator

    Jun 26, 2012
    2,347
    1,029
    Remove the wire from K1/D1 anode to ground.
    Connect Q2 collector to this node.
    Connect Q2 emitter to ground
    Connect K1/D1 cathode to +9V

    Your breadboard is probably wired differently.

    Have fun!
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Try it like this instead:

    [​IMG]

    You'd miswired your transistor connections.
     
  4. StayatHomeElectronics

    Well-Known Member

    Sep 25, 2008
    864
    40
    Q2 is in the wrong place. Put it between the relay coil and ground. Since it is an npn transistor the base must be ~ 0.7 volts above the emitter; however, you have connected the emitter to the 9v supply, the highest voltage in the circuit.
     
  5. spark8217

    Thread Starter Member

    Aug 29, 2011
    64
    2
    cheers guys
    working now ! thanks for the time !
     
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