Electronic varistor

Discussion in 'General Electronics Chat' started by kazintsky, Nov 21, 2013.

  1. kazintsky

    Thread Starter New Member

    Nov 20, 2013
    2
    0
    Hey does anybody know of a resistor which you can adjust the value of with a digital input?
     
  2. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    Make an example of making your point.
     
  3. elec_mech

    Senior Member

    Nov 12, 2008
    1,513
    193
    They are called digital potentiometers. Here is one. Not sure if this is what you are looking for however. If you can elaborate on what you need to do, we can offer more guidance.
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,126
    3,048
    You can make a voltage controlled resistor using the LM13700. See Fig.10 in the data sheet. That's not a digital input unless you do a digital-analog conversion first.
     
Loading...