pull up and pull down resistor


Posted on Feb 5, 2014

Most of the beginners in digital electronics assume that the hanging input is a logic 0. Then, that`s a misconception. They are neutral state which can be a logic 0 or a logic 1. This will bring chaos on your circuit operation. As you can see, in each case there is a default input. For a pull-up, the default input to the logic IC is 1. And for the


pull up and pull down resistor
Click here to download the full size of the above Circuit.

pull-down, the logic is 0. The resistor also provide a current limiting function thus affecting power consumption of the input section. 10kohms is the commonly value but any value can be use depending on your application.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Precision LED Blinker
    LED SignBoard with PIC 16F84A
    Audio Amplifiers 8
    Design of a kind of simple and practical telephone alarm system
    BTL Mono Amplifier With DC Volume Control Circuit
    keep your property where you can see it
    DTMF Receiver IC MT8870 Tester
    S1L9251X Cd-rom 48x Rf Amp Semiconductor
    DMX Lighting System
    Frequency counter Logic schematic



    Top