If a charged capacitor is connected across an inductor, charge will start to flow through the inductor, building up a magnetic field around it, and reducing the voltage on the capacitor. Eventually all the charge on the capacitor will be gone and the voltage across it will reach zero. However, the current will continue, because inductors resist changes in current, and energy to keep it flowing is extracted from the magnetic field, which will begin to decline. The current will begin to charge the capacitor with a voltage of opposite polarity to its original charge. When the magnetic field is completely dissipated the current will stop and the charge will again be stored in the capacitor, with the opposite polarity as before. Then the cycle will begin again, with the current flowing in the opposite direction through the inductor.The charge flows back and forth between the plates of the capacitor, through the inductor. The energy oscillates back and forth between the capacitor and the inductor until (if not replenished by power from an external circuit) internal resistance makes the oscillations die out. Its action, known mathematically as a harmonic oscillator, is similar to a pendulum swinging back and forth, or water sloshing back and forth in a tank. For this reason the circuit is also called a tank circuit. The oscillation frequency is determined by the capacitance and inductance values used. In typical tuned circuits in electronic equipment the oscillations are very fast, thousands to millions of times per second.
The equation used to calculate the resonant frequency of an LC circuit is: f 1 / (2(LC)), where f is the resonant frequency, L is the inductance of the circuit, and C is the capacitance of the circuit.
The differential equation governing the behavior of an LC circuit is: d2q/dt2 (1/LC)q 0.
Self-tuning feedback
In an LC circuit, the current and voltage are related by the equation V L(di/dt) Q/C, where V is the voltage across the components, L is the inductance, C is the capacitance, Q is the charge, and di/dt is the rate of change of current. The current in the circuit is directly proportional to the rate of change of voltage across the components.
The current in an LC circuit is significant because it creates oscillations between the inductor and capacitor, leading to the circuit's resonant frequency. This current affects the overall behavior by determining the rate at which energy is exchanged between the inductor and capacitor, influencing the amplitude and frequency of the oscillations in the circuit.
The LC circuit, or tank circuit, is most commonly located in radios. Its function is to tune radio transmitters to a specific station. The LC circuit consists of an inductor (L), and a capacitor(C), hence the term, LC circuit.
The equation used to calculate the resonant frequency of an LC circuit is: f 1 / (2(LC)), where f is the resonant frequency, L is the inductance of the circuit, and C is the capacitance of the circuit.
The differential equation governing the behavior of an LC circuit is: d2q/dt2 (1/LC)q 0.
yes
LC means coil capacitance circuit RC means resistance capacitance circuit
even though a resistance is not connected in a circuit, it would practically have small resistance due to its components.so practically a LC circuit dosent exist..only a RLC circuit exists
a "LC circuit at resonance" and tuned circuits are the same
Inside the circuit loop between the inductor and capacitor the current will be at maximum. Outside the circuit the current through the LC tank circuit will be at minimum. It depends on where you are measuring it.
T=sqrtLC
Self-tuning feedback
very low current
A: actually any active components will oscillate with positive feedback A transistor can be used as an amplifier along with an LC tank circuit to form an oscillator; it is an active device (as LIBURNO states) which will amplify the feedback signal coming out of the LC tank circuit. The tank circuit has a natural resonant frequency, meaning the L and C together will try to generate a specific frequency; this is then fed back into the input of the transistor amplifier, and the output is fed to the LC tank circuit exacerbating this oscillation until it reaches its' maximum level. An inverting amplifier can be used similarly; the output is fed to the input; this will cause the output to change as fast as the amplifier can. The frequency of this design is much harder to control, but potentially higher. Also, without the LC tank, the output voltage will remain lower.