Electrical Engineering

If we a varactor and we want to control let's say the resonant frequency of the circuit ,in my schematic we must add R1 correct?Else we create a low resistance path for current to flow not through the varactor so the "AC circuit" gets distorted from the "DC circuit".

So by changing the value of Rv we can change the capacitance of the varactor and the resonant frequency.

One last question if we deliver voltage to a house are there varactors which can handle 120V AC so we can create a panel of supply of voltage and we can regulate the quality of current in our loads from a switch?

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Adding resistance to varactor circuit

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