3. DC
bias
DC bias dependency is very common in semiconductor components
such as diodes and transistors. Some passive components are also DC
bias dependent. The capacitance of a high-K type dielectric ceramic
capacitor will vary depending on the DC bias voltage applied, as shown
in Figure-14.
Figure- 14. DC bias voltage dependency for Ceramic capacitor
In the case of cored-inductors, the inductance varies according to the
DC bias current flowing through the coil. This is due to the magnetic flux
saturation characteristics of the core material. Refer to Figure-15.
Figure- 15. DC bias current dependency for Cored-inductor
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