How to choose the transistor and the resistors connected to it

Discussion in 'General Electronics Chat' started by Oussama Zaidi, Jun 30, 2016.

  1. Oussama Zaidi

    Thread Starter Member

    Mar 1, 2016
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    Hi
    I am using the regulator TL497 in the case of I(pk)>500mA so I need an external transistor for that but in the datasheet they don't mention how to choose the transistor and its resistors does anyone has an idea about that ?
    Datasheet:http://www.mouser.com/ds/2/405/tl497a-405896.pdf
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  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Last edited: Jun 30, 2016
  3. Oussama Zaidi

    Thread Starter Member

    Mar 1, 2016
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    0
    Thank you, I am not talking about Rcl I mean the other resistor between pad 13 and the base of the transistor and if it is possible can you tell me why the value of the other resistance is between 1k and 10k?
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,969
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    Last edited: Jun 30, 2016
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