When Zener current *i**z *is greater than zero, gate-to-source voltage *V*gs becomes voltage level *V**z *. In the duration fromfeedback

current *i**s *is greater than magnetizing inductor current *i**m*, and gate-to-source voltage *V*gs is clamped at voltage level *V**z *.Re-identification of anonymized CDR datasets using social network data The voltage across the magnetizing inductor is equal to the Zener breakdown voltage *V**z *; this equality causes magnetizing inductor current *i**m *to increase linearly. At *t*1 , feedback current *i**s *equals magnetizing inductor current *i**m*, and Zener current *i**z *reaches zero.

When Zener current *i**z *is less than zero **gate-to-source voltage** *V*gs becomes negative voltage level In the duration from *t*1 to *t*2 , Re-identification of anonymized CDR datasets using social network data feedback current *i**s *is less than the magnetizing inductor current *i**m*, and gate-to-source voltage *V*gs is clamped at, feedback current *i**s *equals magnetizing inductor current *i**m*, and Zener current *i**z *reaches zero. When Zener current *i**z *is greater than zero, gateto- source voltage *V*gs becomes voltage level *V**z *. Since feedback current waveform *i**s *is symmetrical, and Zener breakdown voltage *V**z *is assumed to be constant, the durations from each span over one half of the cycle.

According to the timing diagram illustrated feedback current *i**s *is equal to magnetizing current *i**m *at one-half of the cycle, as shown in Since feedback current * *is equal to times resonant inductor current, where *n *is the turns ratio of the current transformer, can be rewritten as follows: are the resonant inductor current and the magnetizing inductor current at one-half of the cycle, respectively.

According to the time-domain analysis given in prior work resonant inductor current in the half-bridge resonant inverter of and magnetizing inductor current can be expressed as respectively Referring to the derivation procedure shown in resonant inductor current of the full-bridge resonant inverter PARAMETERS OF THE SIMULATION CIRCUIT Operating frequencies of the simulated and calculated results with different gate-to-source capacitance *C*gs . can be derived as follows By substituting the magnetizing inductance the parameters, as listed in Table I, the self-oscillating full-bridge electronic ballast is simulated to validate the calculated operating frequency by The gate-to-source capacitor *C*gs is considered by the simulation circuit. shows the comparison of the simulated and calculated operating frequencies with the different values of the gate-to-source capacitance*C*gs .With gate-to-source capacitance *C*gs , the operating frequency of the simulated results decreases when gate-to-source capacitance *C*gs is increased. Since the design equation of the gate-drive network does not consider gateto- source capacitance *C*gs , the operating frequency of calculated