4. Transient currents in insulators
4.1 General
Let's place a plate of solid insulator of thickness d between two metal electrodes and apply a constant potential differenceV 0 to this system constituting a capacitor.
First, a displacement current appears, which may be initially intense, but decays exponentially with a generally fast time constant. This time constant is the product of the sample capacitance and the circuit resistance, possibly including the sample resistance.
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If we assume that this insulator is devoid of any conductivity, a normal charging current i 1 flows through the circuit and decreases with time. This current may continue to decrease...
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Transient currents in insulators
Frequency response and dielectric losses of insulators
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