How does charge pass through a capacitor in a radio tuner

AI Thread Summary
A capacitor in a radio tuner works by storing electrical energy and allowing AC current to pass through it, while blocking DC current. When charging a capacitor, electrons move from one plate to the other via an external circuit, not directly between the plates. This movement of charge creates a potential difference, which is essential for the capacitor's function in tuning radio frequencies. The inductor in the circuit helps facilitate electrical resonance by opposing changes in current, enhancing the AC signal. Understanding this interaction clarifies how capacitors operate in radio tuners and the role of AC current in their functionality.
Strangeline
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I understand that the simplest tuner you can have is a capacitor and inductor connected in series, and i understand that radio waves use AC current to send signals, and that capacitors block DC current. I think i also understand that an inductor even without an iron core experiences an opposing magnetic force (?) thus clearing the way for electrical resonance via AC current.

but I am having a hard time visualizing how AC current is passed through a fully charged capacitor. Does the term really mean charges pass through or just that it pulls and pushes the charges already inside the inductor. I'm sorry if this is a stupid question, but after doing some searching of my own, i came across this confusing writing:

Since the charging of a capacitor can be thought of as moving charge from one plate DIRECTLY onto the other plate through a potential difference of V, the voltage between the capacitor plates.

because i though a capacitor only stored voltage. I did not know electrons could jump from one plate to the other, because that does not make sense to me
 
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Strangeline said:
Since the charging of a capacitor can be thought of as moving charge from one plate DIRECTLY onto the other plate through a potential difference of V, the voltage between the capacitor plates.

they don't mean that the charge goes directly from one plate to the other. If you charge a capacitor with a battery, the charge goes from one plate, through the wires and the battery to the other plate.
 
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