The request
“Draw a parallel RLC resonant tank with a 1 MHz AC source, a 25 µH inductor, a 1 nF capacitor, and a 1 kΩ loss resistor.”
Then tryChange the capacitor to 470 pF.Add a 10 kΩ load resistor.
What is in this drawing
Read the decisions behind it.
01Topology
Place R, L, and C across the same two nodes.
02Drive
Use a small AC source for frequency analysis.
03Loss
Model damping with a parallel resistor.
Use to show a parallel resonant tank or a basic tuned load.
More like this
Other examples in this family.
FAQ
Common questions
What is parallel resonance?
It is the frequency where a parallel inductor and capacitor have opposing reactive currents, producing high input impedance.
What sets the resonant frequency?
Inductance and capacitance set it approximately as 1 divided by 2π times the square root of LC.
Why add a resistor?
It represents losses or loading that limit the circuit Q.