Cores by circuitCIRCUIT 01VinSLDCRVoBuck converter — output inductor→CIRCUIT 02VinLSDCRVoBoost converter — input inductor→CIRCUIT 03~BR+LSDCRVoBoost PFC — PFC choke→CIRCUIT 04VinNpSNsDCRVoFlyback converter — energy-storage transformer→CIRCUIT 05VinDrNrNpSNsD1LD2CRVoForward converter — transformer & output inductor→CIRCUIT 06VinNp ×2S1S2Ns ×2D1D2LCRVoPush-pull converter — centre-tapped transformer→CIRCUIT 07VinS1S2LrCrNpNs ×2D1D2CRVoHalf-bridge LLC — transformer & resonant inductor→CIRCUIT 08L1 / LL2 / NN turnsIcm →Icm →Common-mode choke — EMI filtering→CIRCUIT 09VsNpNsRLSignal transformers — wideband, balun, current transformer→CIRCUIT 10ICLrodCAnt.Antenna & resonance — antenna rods, RFID, high-Q inductors→CIRCUIT 11VinLCCICChokes & filters — low-frequency chokes, SMD inductors, cost-effective grades→