Connect with us

What basic transistor I can use for simple PWM

Discussion in 'General Electronics Discussion' started by Farukh Khan, Jul 20, 2015.

Scroll to continue with content
  1. Farukh Khan

    Farukh Khan

    157
    2
    Jun 12, 2015
    Hello,

    I want to know about PWM transistors. Which simple transistor I can use for PWM. Suppose I want to control the speed of a rotor. Now I want a transistor which will check PWM signal at the base and limit current or voltage in the other two pins which will act like a limiting switch. Please suggest me a transistor like this.


    Thanks in advance....
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,482
    2,830
    Jan 21, 2010
    the transistor you choose will depend on the load current. I believe there are a couple of resources which show you how to use transistors to switch a load. PWM is just switching a load repetitively and quickly
     
  3. Minder

    Minder

    3,066
    657
    Apr 24, 2015
    PWM control especially motors is done now commonly controlled with Mosfets, these have the advantage of very low on resistance and also have the option of TTL Logic level gate compatibility.
    You can get some that have the current sense built in for external monitoring, alternatively a very low series resistor in the source lead can be used to monitor load.
    Your selection of Mosfet will depend on max load.
    A.
     
  4. Farukh Khan

    Farukh Khan

    157
    2
    Jun 12, 2015
    Thanks for the help guys :)
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-