Hi,photocouple driver relay,is it safe?

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Discussion in 'General Electronics Chat' started by rodbare, Jan 15, 2012.

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  1. Jan 15, 2012 #1
    rodbare

    Thread Starter New Member

    May 17, 2008
    2
    0
    I want to driver relay(G5V-2) with TLP523,is it safe?
    [​IMG]
     
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  2. Jan 15, 2012 #2
    bertus

    Administrator

    Apr 5, 2008
    18,216
    3,477
    Hello,

    Wich version of the relais are you planning to use?
    You must use a protection diode, cathode to the + and anode to the transistor, to protect the transistor from the back EMF of the relais.

    Bertus
     
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  3. Jan 15, 2012 #3
    rodbare

    Thread Starter New Member

    May 17, 2008
    2
    0
    ok !

    [​IMG]
    I will use g5v-2.
     
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  4. Jan 15, 2012 #4
    bertus

    Administrator

    Apr 5, 2008
    18,216
    3,477
    Hello,

    Do you want to use the standard or high sensitivity relais?
    What voltage is the relais?

    The standard relais uses 100mA at 5 Volts.
    The TLP can switch 150 mA absolute maximum.

    Bertus

    PS I have attached the both datasheets.
     
    #4 Reply
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