Product specifications

Instrumentation Laboratory Exercise 52
Laboratory Exercise #5 Test Report NAME:______________________________
What is the no-load speed of the motor with a 5 V supply: RPM
NL
= __________
What is the no-load current of the motor with a 5 V supply: I
NL
= __________
What is the stall current of the motor: I
stall
= __________
Give the equation for the best linear fit torque curve: I = __________– RPM × __________
Get a good torque curve up on your screen and allow the technician to verify it.
Call the technician and have him verify your setup:
Technician Check
Questions
Why doesn’t the motor current resume to zero at no-load speed?
Can you recalibrate the speed measurement system to measure the duration of a single pulse (from a rising transition to the
subsequent falling transition)?
Given the number of points and data frequency, what are the maximum and minimum speeds that are accurately measurable
with this system?