stop chattering

Discussion in 'General Electronics Chat' started by bastion, Feb 28, 2013.

  1. bastion

    Thread Starter New Member

    Feb 28, 2013
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    I am new to electronics and I know there must be a solution to my problem.

    I have a contact switch that though an acuatar when it makes contact it starts a boiler up for central hearting. The contact when it get close to closeing it chatters this is messing up the boilers PCB by giving it a doggy supply in the first second. Is there some thing electronic I could put in the feed to the boiler from the contacts that would stop this from happening (the voltage is 240v AC).
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    A solid state relay maybe? Depends on how much current you need.
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Increase "actuator" speed to decrease switching speed?
    Slow switching speed can also destroy the contacts fairly quickly. Arcing causes pitting/carbon buildup,etc.. Switch fast.

    But yes not sure why you must use an actuator of sorts.. Just remove the actuator and use that signal to energize a relay instead or whatever.
     
  4. WBahn

    Moderator

    Mar 31, 2012
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    I think you might need to add some hysteresis to the system. Can you provide a circuit diagram of some kind and indicate which portions you can tinker with?
     
  5. bastion

    Thread Starter New Member

    Feb 28, 2013
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    Can't control the actuator speed as it's fix to a three way motorized valve. This stops the boiler from cooking it's self i.e. full heat with the valve in a bypass mode water not going though the boiler.
     
  6. bastion

    Thread Starter New Member

    Feb 28, 2013
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    Only the lead from the contacts
     
  7. bastion

    Thread Starter New Member

    Feb 28, 2013
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    Would a "snubber" be the right thing to use?

    If so how do I woke out what value one to use?
     
  8. bastion

    Thread Starter New Member

    Feb 28, 2013
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  9. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
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    Why not simply use the valve control voltage/signal to directly trigger a relay eliminating the limit switch all together.

    or buy a limit switch with a lesser "chatter time" or contact design to eliminate chatter.. This is one reason some switches cost $20 and some cost $500+..
     
  10. BillB3857

    Senior Member

    Feb 28, 2009
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    It sounds like the "snap action" of your switch isn't "snapping". You should be able to feel it if you move the actuator manually. You need a new switch!
     
  11. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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    use a delay on timer set for a couple of seconds
     
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