Need help understanding this Relay

Discussion in 'The Projects Forum' started by kartthiksudhir80, Mar 28, 2015.

  1. kartthiksudhir80

    Thread Starter New Member

    Mar 28, 2015
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    I could not make out where to give the wires in this locally made 1 channel 5v relay that i bought as im new to relays and this one seems to be different from the ones seen online. Any help is appreciated. Thank you. Relay pic.jpg
     
  2. AfdhalAtiffTan

    Active Member

    Nov 20, 2010
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    upload_2015-3-28_6-48-35.png

    I found this on Google:
    [​IMG]
     
    kartthiksudhir80 likes this.
  3. kartthiksudhir80

    Thread Starter New Member

    Mar 28, 2015
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    Thank you so much, where should i give the ac input and where should i get the ac output from?
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    use the Com and NO terminals.
     
  5. DickCappels

    Moderator

    Aug 21, 2008
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    A little more detail may be useful: Run AC Line to the relay COM (Common) contact and connect the NO (Normally Open) contact to one of the load (such as a light bulb and connect the other connection from the load to AC Neutral.

    Be sure none of the AC line connections can short or touch anything else -especially people! It is recommended that the circuit be enclosed in an insulated box.
     
  6. kartthiksudhir80

    Thread Starter New Member

    Mar 28, 2015
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    What about the coil terminals , should i leave them open?
     
  7. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    the coil connects to the 5V dc supply to operate it.
     
  8. kartthiksudhir80

    Thread Starter New Member

    Mar 28, 2015
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    and also, what about the ground terminals?
     
  9. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    connect the relay coil to a 5V dc supply and it will operate, what are you trying to make?
     
  10. kartthiksudhir80

    Thread Starter New Member

    Mar 28, 2015
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    i just want to use a dc voltage powered switch to switch on an ac bulb, the problem is i cant make much of the locally made relay board that i have got here
     
  11. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Post #2 can be misleading labeling all the common terminals GND especially to the initiated, one will be the 5vdc common and the other will be the switched AC.
    BUT it appears that there is two jumpers that have to be removed to switch a separate supply, it looks like they also connect the +5v supply to the contact side whith the jumpers in place?
    Check first.
    Max.
     
  12. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    you need to remove the link from A to E,as shown on the pcb, to use Mains Voltage

    the 5V supply is E posative, F gnd, and connect the switch to E and G.

    Relay pic1.jpg
     
    Last edited: Mar 28, 2015
  13. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Looks to me as they both need removing,!?
    Max.
     
  14. AfdhalAtiffTan

    Active Member

    Nov 20, 2010
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    The OP doesn't mention that it will be used on AC power. My bad.

    Assuming you have a properly powered 5V signal, maybe it is simpler for you to use the relay directly. Just be careful, you're working with lethal voltage.
     
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