Relay or bjt?

Discussion in 'Homework Help' started by Cerkit, Apr 10, 2009.

  1. Cerkit

    Thread Starter Active Member

    Jan 4, 2009
    275
    3
    What are the advantages of a relay over a bjt as a switch??
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,346
    Hello,

    Most times the relay is more rigid but slow.
    The BJT has mosttimes less power but is very fast.

    Greetings,
    Bertus
     
  3. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Also the relay can offer the advantages of isolating the signal being switched from the relay switching circuitry. The voltage and current of the signal being switched may be significantly greater than the signals being use to activate the relay.

    hgmjr
     
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