Why are LC circuits not realistic?

Why are LC circuits not realistic?

Answer: L-C oscillations are not realistics because and element whether its an inductor or capacitor have some lossy element i.e. resistance. An inductor is made of coil and coil have some resistance same capacitor is also have some resistance. So practically L-C oscillations will not occur for intinite time.

What are LC oscillations explain qualitatively how these oscillations are produced?

When a charged capacitor is allowed to discharge through a non-resistance, electrical oscillations of constant amplitude and frequency are produced. These oscillations are called LC-oscillations. This equation has the form for a simple harmonic oscillator. The charge, therefore, oscillates with a natural frequency.

Under what condition the discharge of capacitor in LCR circuit is oscillatory?

At the critical value of R2, the circuit just ceases to oscillate, and when R2>> 1 L, the discharge approaches the exponential decrease of charge when a capacitor discharges through a resistor.

What are the applications of LC circuit?

The LC circuit is used to select or generate a specific frequency signal. The application of LC circuits is reflected in many electronic devices, especially radio devices, such as transmitters, radio receivers and television receivers, amplifiers, oscillators, filters, tuners and frequency mixers.

How is a series LC circuit inductive and capacitive?

Therefore the series LC circuit, when connected in series with the load, will act as a band-pass filter having zero impedance at the resonant frequency. At frequency below resonant frequency i.e. , . Hence the circuit is capacitive. At frequency above resonant frequency i.e. , . Hence the circuit is inductive.

How can a simple series resonant circuit predict the future?

So, how can a simple series resonant circuit predict the future; at the moment the square wave starts, the LCR produces a decaying sinwave until the square wave changes polarity and resets the LCR to produce a new form of the decaying sine wave. Should this surprise you if you just think about it a little.

What is the purpose of an LC circuit?

The LC circuit is used to generate signals of a specific frequency, or to extract signals of a specific frequency only from more complex signals. It is suitable for important components such as oscillation circuits, filter circuits, tuners, and mixers.

How does the LC circuit work at the resonant frequency?

Thus at resonant condition when total electrical impedance Z will be zero means X L and X C cancel out each other. hence, current supplied to a series LC circuit is maximum ( ). Therefore the series LC circuit, when connected in series with the load, will act as a band-pass filter having zero impedance at the resonant frequency.