LM324 Operational Amplifier Circuit

Discussion in 'The Projects Forum' started by cevval, Jun 15, 2012.

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  1. cevval

    Thread Starter Active Member

    Dec 6, 2011
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    Please, somebody can help me about:
    I want to operate a relay coil via output of a said operational amplifier say LM324
    Regards,
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    What is the operating voltage and current of the relay?

    An LM324 op-amp would not output sufficient current to energize a relay.
    You will need to add a buffer transistor.
     
  3. bertus

    Administrator

    Apr 5, 2008
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