Table of Contents
Advertisement
ET System electronic GmbH
3.13.2 Ripple measurement
The E-load can test voltage ripple (Vpp), current ripple (Ipp) and display in real-time. The
measurement method is different from the traditional measurement of oscilloscope with
blocking capacitance. The E-load ripple measurement within the measurement bandwidth
behave a good flat, so the ripple measurement is more accurate and has extremely high
repeatability. However, the traditional measurement method will cause the switch ripple to be
attenuated due to the capacity of electrolytic capacitor, and the cable. The difference of
capacity result in varying degrees of attenuation, has both large errors and poor repeatability.
In general, the ripple contains two different frequency bands of the power frequency ripple and
the switching ripple, and the ripple of the load is measured as the combined amount of the two
ripples.
53
Advertisement
Table of Contents
