Simulated results: (a) IGBT [S.sub.2] voltage ([V.sub.S2]) and currents ([I.sub.S2]); (b) IGBT [S.sub.b] voltage([V.sub.Sb]) and currents ([I.sub.Sb]); (c) resonant inductor current [I.sub.Lr]; (d) resonant capacitor
voltage [V.sub.Cr]; (e) diode current ([I.sub.D1]): boost mode.
The resonant inductor current [i.sub.r] (t) and resonant capacitor
voltage [v.sub.Cr] (t) can be obtained by (A.1):
Equations (A.1) to (A.16) give the derivation of large-signal model of resonant inductor current [i.sub.r](t) and resonant capacitor
voltage [v.sub.Cr](t) and their end values at event in terms of initial values of kth event.
The resonant inductor L3 and the resonant capacitor
C3 resonate and the voltage of C3 decreases from the output voltage VO to zero.
By the definition of the resonant frequency, the resonant capacitor
([C.sub.r]) can be calculated using the following equation 27:
[C.sub.S] is the pick-up resonant capacitor
. [C.sub.S] can be expressed as
The DCRS is composed of two (transmitting and receiving) magnetic dipole coils, placed in parallel, with each coil having a ferrite core and connected with a resonant capacitor
. Comparing to a conventional loop coil, the dipole coil is very compact and has a less dimension.
It is majorly constituted by a PFC inductor LPFC, resonant inductor [L.sub.r], and resonant capacitor
(c) Resonant inductor [L.sub.r] and resonant capacitor
[C.sub.r] are much smaller than the inductor L and output capacitor [C.sub.0], respectively.
Input inductor, [L.sub.l] 10 mH Voltage apply on [C.sub.1], [V.sub.c1] 126 V Magnification of resistance, [T.sub.x] 3.66 Equivalent power resistance, [R.sub.T] 118 [OMEGA] Voltage apply on a single transformer, [MATHEMATICAL 23.24 V EXPRESSION NOT REPRODUCIBLE IN ASCII] Minimum resonant current, [I.sub.r min] 0.9 A Minimum loading current of LEDs, [I.sub.LED min] 280 mA Value of parallel capacitor, [C.sub.1] 20.5 nF Value of resonant capacitor
, [C.sub.r] 49 nF Value of resonant inductor, [L.sub.r] 321 [mu]H
The ZVS-MRCs are generated from PWM topologies by adding three resonant components to the power circuit: a resonant inductor L, a resonant capacitor
[C.sub.S] in parallel with the active switch, and a resonant capacitor
[C.sub.D] in parallel with the rectifier.
The BiStatix RFID technology allows antennas to be printed on materials using silicon and printed ink instead of a metal coil and resonant capacitor
. This allows the reader to interact with a variety of materials, from durable plastic to disposable laminated paper.