Also, since the voltages are the same in magnitude, the ripple currents from the two inductors will be equal in magnitude.
32.
The heat generated by the ripple current also influences the lifetime of aluminum and tantalum electrolytic capacitors with solid polymer electrolytes.
33.
In non-solid electrolytic capacitors the heat generated by the ripple current forces the evaporation of electrolytes, shortening the lifetime of the capacitors.
34.
During the 1970s, the increasing digitization of electronic circuits came with decreasing operating voltages, and increasing switching frequencies and ripple current loads.
35.
High current impulse loads or high ripple currents can generate audible sound from the capacitor itself, draining energy and stressing the dielectric.
36.
The ripple current for polymer e-caps is specified as a maximum effective ( RMS ) value at 100 kHz at upper rated temperature.
37.
Typically, the ripple current value is calculated for a core temperature rise of 2 to 6 �C against ambient, depending on type and manufacturer.
38.
The ripple current is specified as an effective ( RMS ) value at 100 or 120 Hz or at 10 kHz at upper category temperature.
39.
For example, the ripple current at 10 kHz can usually be approximated to be 30 to 40 % higher than the 100 / 120 value.
40.
Because the ESR decreases with increasing frequencies . the ripple current data sheet value, specified at 100 / 120 Hz, can be higher at higher frequencies.
