Advertisement
Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.
If we do not hit our goal we will be forced to close the site.

Current status: https://keepboardsalive.com/

Annual subs are best for most impact. If you are still undecided on going Ad Free - you can also donate using the Paypal Donate option. All contribution helps. Thank you.
https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.
Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

resistor in series with inductor...

  • 12-01-2009 02:54PM
    #1
    x in the city
    Closed Accounts Posts: 7,132 ✭✭✭


    Hi Lads,

    Sorry for this n0b question but I am rusty on these things.

    what sort of DC diagram (Time vs Current/Voltage) would you get for a resistor in series (or parallel) with an inductor connected to a dc source?


Comments

  • #2
    DublinDilbert
    Registered Users, Registered Users 2 Posts: 5,400 ✭✭✭DublinDilbert


    Some of the guys here or over on the Electrical forum use multisim (a free simulator ) tool, it would be perfect for figuring out stuff like this. Also you can extract voltage / current wave forms ect from it....

    Well the inductor is going to do everything it can to resist a change in the current flowing in it. So based on that you should be able to figure out what size the current should be at power on...


    http://www.edn.com/article/CA6477513.html
    http://www.analog.com/en/design-tools/dt-multisim-spice-program-download/design-center/index.html?ref=ASC1285


  • #3
    fishdog
    Closed Accounts Posts: 1,113 ✭✭✭fishdog


    what sort of DC diagram (Time vs Current/Voltage) would you get for a resistor in series (or parallel) with an inductor connected to a dc source?
    The current through the RL series would start at 0 and rise to a final value = V/R

    If you were to graph this it against time you would see that it is an exponential growth curve. After 5 time constants it is said to reach steady state. A time constant = L/R seconds.


Advertisement