Replies

Welcome, guest

Join CrazyEngineers to reply, ask questions, and participate in conversations.

Sign up Log in

CrazyEngineers powered by Jatra Community Platform

  • reachrkata
    reachrkata

    @reachrkata-FOcqhH • Jan 22, 2007

    If you refer to any text book indicating the internal construction of a 555 timer, you'll see that Vcc is divided internally using 3 resistors to get 2/3 Vcc and 1/3 Vcc used later in comparators.

    The values of these 3 resistors are 5 kilo Ohm each and hence the name 555.
    😁

    0
  • Jerry
    Jerry

    @jerry-5wPKU7 • Jan 22, 2007

    reachrkataIf you refer to any text book indicating the internal construction of a 555 timer, you'll see that Vcc is divided internally using 3 resistors to get 2/3 Vcc and 1/3 Vcc used later in comparators.

    The values of these 3 resistors are 5 kilo Ohm each and hence the name 555.
    😁

    Perfect! 😁 The timer gets its name from the resistors!

    Jerry

    0