Fig. 1. Principle diagram of series resonant charging power supply

Fig. 2. Simplified principle diagram of series resonant charging power supply

Fig. 3. Waveform diagram of resonance principle in DCM mode

Fig. 4. Walton voltage doubling rectifier circuit

Fig. 5. Principle diagram of portable resonant voltage doubling capacitor charging power supply

Fig. 6. Portable resonant voltage doubling capacitor charging power supply

Fig. 7. Partial waveform of resonant current

Fig. 8. Integral waveform of resonant current

Fig. 9. Voltage waveform of charging capacitor