need help for Relay circuit

Discussion in 'General Electronics Chat' started by vijaymahantesh409, Mar 4, 2010.

  1. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    Sir,
    I am doing on 4 way auto selector ,please anybody help me the requirement of project is as follows
    1. in 4 relays are these are operating one after the other.
    2. These relay works like ring counter
    3. When i reset then it has to start from relay R1 next R2, next R3, and NR4
    4. But this circuit get power only when i trigger that only power it gets.
    I did one circuit but it work on continually power supply,
    Lik this relay has to work
    R1=1,R2=0,R3=0,R4=0.
    R1=0,R2=1,R3=0,R4=0.
    R1=0,R2=0,R3=1,R4=0.
    R1=0,R2=0,R3=0,R4=1. Start from first, if i trigger the circuit then only gets power ,for relay operation.
    Note: The circuit should be without using any microcontroller.
    Please sir give me idea or link or circuit.

     
  2. R!f@@

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    Apr 2, 2009
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    Edited:
    Do you have this IC 4017 and 555 timer?
     
  3. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    thanks for giving 4017 and 555,

    But one problem my ckt get power only when trigger i applied after removing trigger power goes off, but my requirement is current status should me saved start from from next count.


    sir R!f@@
    when power cut off 4017 will reset , i don't require such ckt.


    sir
    once again i telling you all 4 relay operate one after the other starting from 1 to 4 . in middle if i cut off power and i made on the ckt has to give next count or next relay has ON Like,If i switch off power off after 2nd and i made ON ,the ckt has to give 3rd or next relay3 has to ON.
     
  4. KMoffett

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  5. R!f@@

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    OK Vijay, its ur name right? and you must be from India. Which part?
    What kind of components can you get?
    I know you are not too fluent in English, and I am having a hard time figuring out what you are trying to say.
    So lets do one thing. I want you to write down in steps of what you want the circuit to do or may be you can draw a block diagram of the circuit.
     
  6. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    Design requirement as fallows.

    circuit having 4 relays
    they are selecting one after the other.
    in ring manner
    if i press reset it start with first relay
    if i switched off the power supply
    and switched on then it will start form same state where it there when power supply off at last time.

    please give me idea so that i can design this circuit sir

    i am waiting for reply .
     
  7. retched

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    Dec 5, 2009
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    You want a circuit that, for instance,

    Code ( (Unknown Language)):
    1.  
    2. --Power ON--
    3. --Button 1 Press--
    4. --Only Relay 1 energizes--
    5. --Button 1 Press--
    6. --Only Relay 2 energizes--
    7. --Button 1 Press--
    8. --Only Relay 3 energizes--
    9. --Button 1 Press--
    10. --Only Relay 4 energizes--
    If the power is turned OFF between any of the relays, When reapplied, That relay will energize, causing the circuit to continue from that point.

    This can be done with 4 latching relays.
    Latching relays hold there state without power. So if power is lost, when it is regained the last relay will still be energized.
    You may need a 555 for the pulses, unless the button press (or trigger) will be longer than ~20ms.

    You have a truth table, so figuring the logic shouldn't be difficult.

    If I have time later, Ill set you up a sketch.
     
  8. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    retched thanks for giving idea.


    please give me circuit diagram, try ed it but i am not getting please..............
     
  9. retched

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    Ok, I have to leave for work, but I'll draw you up a diagram when I return.
     
    vijaymahantesh409 likes this.
  10. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    sir Thanks.... . please sir draw circuit for me,
     
  11. vijaymahantesh409

    Thread Starter New Member

    Mar 4, 2010
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    sir please draw circuit for me please..............
     
  12. retched

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    Ill have to get some help here. The reset button is giving me quite a headache.

    The problem I am having, is switching the active relay off only. and engaging only the relay #1.

    Why can you not use a microcontroller? It would make this a touch easier.
     
  13. R!f@@

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    retched..can u show me ur schema
     
  14. retched

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    Which one?

    I am currently re-configuring to figure on simulation.

    I am having to use gating to only send a pulse signal to the three bottom relays on reset and if relay #1 is already latched, leave it.

    Gimme a min.

    [ed]
    If I only have temporary power from the 2 wire input, during a switching request, I cannot figure on a way to do the resetting with out power.

    Rifaa, Its all yours. I will be watching from the edge of my seat.
    [/ed]
     
    Last edited: Mar 16, 2010
  15. R!f@@

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    u said u might need help.. i am bored here.... haven't slept ...not feeling sleepy..
    and no gf. boriiiiiiiiiiiiiiing
     
  16. retched

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    Does anyone know of a relay with a mechanical/manual reset to 'NO' state?
    [ed]
    Sorry rifaa, I didn't see you post about not having a GF :p
    but, lets work this circuit out..
    [/ed]
     
    Last edited: Mar 16, 2010
  17. R!f@@

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    small relays does not have manual options.
    Contactors have them.. manual push to make :confused::confused: or is it the other way around. :eek:
    Nope ....never seen one. Have to make one
     
  18. R!f@@

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    am i missing something. here?
    where is it..
     
  19. retched

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    Sorry, I'm drawing up one we can start from scratch. 2 min..
     
  20. KMoffett

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    I'm just throwing this out there. Since nobody has posted a schematic, I'm throwing one out to see if it can be tweaked. This is a 1-of-4 "radio button" selector using 4 relays. If they are latching, then they retain their state after power is removed. If the left button had a second set of contacts that applied power as well as activating the coil on the first relay, pressing it would reset to the first relay. But I don't see an obvious solution for toggling to the next relay on power-up (trigger).

    Ken
     
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