Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Can pulse generators output 100mA?

  1. Sep 13, 2013 #1
    If I have a pulse generator what is the current it can output? It doesnt say in the datasheets

    IF I have a 5V pulse and 50ohm output impedence am I supposed to believe it outputs 100mA?

    And then if my load is 1ohm I should get something near 100mA through it?
  2. jcsd
  3. Sep 13, 2013 #2


    User Avatar
    2017 Award

    Staff: Mentor

    That depends on your pulse generator.

    If the pulse is not too short, I would expect this to work.
  4. Sep 13, 2013 #3


    User Avatar
    Science Advisor

    Who is the manufacturer and what is the model number of your pulse generator ?
  5. Sep 13, 2013 #4
    100ns pulse
  6. Sep 13, 2013 #5


    User Avatar
    Gold Member

    Nobody can answer that question without a data sheet. If this is an instrument, then it may have a 50 ohm output impedance, so analyze as if there were a 50 ohm resistor in series. Or it may have settings for the output impedance, or a low impedance mode. I expect 50 ohms.

    To test it, measure the open circuit pulse amplitude, then apply a 50 ohm load. The change in voltage will tell you the output impedance. It will go to 1/2 the voltage if it is a 50 ohm generator.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook