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Power Switching Capacitor Phase
This concept can cause brain meltdown. How can there be a current wothout a voltage? It's because the capacitor voltage is not the one causing the current to charge the capacitor. There has to be an external voltage, fixed or alternating, causing the circuit current to flow. The capacitor voltage depends on how fully charged the capacitor is and it builds up as the capacitor charges.
In this simulation, the oscilloscope voltages are green and the currents are yellow. Notice the 900 phase shifts in oposite directions.
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