View Single Post
  #19   Spotlight this post!  
Unread 31-01-2014, 01:50
zbrozek zbrozek is offline
Registered User
None #1700
 
Join Date: Jan 2014
Location: Sunnyvale, CA
Posts: 19
zbrozek will become famous soon enough
Re: Findings from a couple hours at the lab bench with a CIM and a Jaguar

Well, not at the same time, but it's the same method. Basically I find a high-enough frequency where the voltage across at the output of the meter (post-50R source resistor) doesn't change when I attach the motor.

Then I lower the frequency until the voltage is exactly half that. At that point the voltage across the resistor and the voltage across the motor are the same, but I can't measure the voltage across the resistor directly. I have to trust that my instrument is consistent between the two measurements. It's probably a good assumption.
Reply With Quote