Relay BU-5084M polarity ?

Discussion in 'General Electronics Chat' started by DrizzleMan, Nov 13, 2013.

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  1. DrizzleMan

    Thread Starter New Member

    Nov 13, 2013
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    I have a question about relay polarity.

    I purchased 4 BEULER BU-5084M relays that has a Negative Spike Suppression protection.

    My question is: Does polarity matter?

    Should pin 85 be grounded and pin 86 +12v ??

    I tried looking for the BEULER website could not find one.

    Thanks in advance for your help.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
    2,382
    If this is a reverse EMF diode across the coil, then it need to be connected with the correct polarity.
    Going by the numbers, this is an automotive relay?
    You can confirm polarity if you have a meter that has diode testing capability.
    Max.
     
  3. DrizzleMan

    Thread Starter New Member

    Nov 13, 2013
    3
    0
    Follow-up Findings:

    I got a hold of the Vendor Tech support.

    Relay BU-5084M has no diode and polarity does not matter for this specific relay.

    Bench tested to confirm.

    Thanks for the help.
     
  4. tshuck

    Well-Known Member

    Oct 18, 2012
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  5. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    I aleady closed an other thread about the same subject.
    I am closing this thread as it violates AAC policy and/or safety issues.

    Quote:
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    • Any kind of over-unity devices and systems
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    This comes from our Tos:
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    There will be enough sites where automotive questions can be discussed :
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    There is no need to hide the automotive needs.
    Our members will discover and report this.
    If you try it a third time a ban will follow.

    Bertus
     
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