Switching with transistor

Discussion in 'Homework Help' started by cdtpurna, Dec 29, 2010.

  1. cdtpurna

    Thread Starter New Member

    Dec 29, 2010
    1
    0
    hi if the control for base is around 12 mA and the switch is to switch on a relay what is can the circuit be
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Welcome to the forums.

    You don't give nearly enough information. What is the transistor, the relay coil voltage & current? What is the current gain figure for the transistor - hint - that gives you your answer.
     
  3. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
    Are you asking for a schematic for the transistor-relay coupling? Can you be more specific? What are you voltage-current needs?
     
Loading...