In theory, a "perfect" capacitor should behave as a zero-ohm ESR, purely capacitive, non-impedance element. Regardless of frequency, the current through the capacitor leads the voltage by 90 degrees. In fact, capacitors are not perfect, more or less will have a certain ESR value. The ESR of a particular capacitor varies with frequency and is an equation. CONTACT US Phone:+86 137 2340 5911 Email:
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