# Blog

## What is series LC circuit? The L-C series circuit acts as a short circuit for AC currents exactly at the resonant frequency. For this reason, a series L-C circuit is used as a trap to conduct signals at the resonant frequency to ground.

## What is driven LCR circuit?

Consider an LCR circuit consisting of an inductor, , a capacitor, , and a resistor, , connected in series with an emf of voltage . ( See Figure 11.) Let be the instantaneous current flowing around the circuit.

## What does an LC circuit do?

LC circuits are used either for generating signals at a particular frequency, or picking out a signal at a particular frequency from a more complex signal; this function is called a bandpass filter.

## How do you calculate an LC circuit?

Resonance in the LC circuit appears when the inductive reactance of the inductor becomes equal to the capacitive reactance of the capacitor. So: xL= 2 * π * f * L. xC= 1 / (2 * π * f * C)Aug 4, 2021

## Where are LC circuits used?

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.Sep 30, 2020

## What is the impedance of LC circuit?

The total impedance of a series LC circuit approaches zero as the power supply frequency approaches resonance. The same formula for determining resonant frequency in a simple tank circuit applies to simple series circuits as well.

## What are LC oscillators?

LC oscillator is a type of oscillator where a LC (inductor-capacitor) tank circuit is used for giving the required positive feedback for sustaining the oscillations. ... Typical applications of LC oscillators include RF signal generators, frequency mixers, tuners, sine wave generators, RF modulators etc.

## What is parallel RLC circuit?

In parallel RLC Circuit the resistor, inductor and capacitor are connected in parallel across a voltage supply. The parallel RLC circuit is exactly opposite to the series RLC circuit. The applied voltage remains the same across all components and the supply current gets divided.Apr 16, 2021

## What is a series resonant circuit?

Series resonance is a resonance condition that usually occurs in series circuits, where the current becomes a maximum for a particular voltage. In series resonance, the current is maximum at resonant frequency. The series resonance current curve increases to a maximum at resonance then decreases as resonance is passed.

## What are the composition of LC circuit?

The LC circuit is a circuit composed of capacitors, inductors, resistors and other components and electronic devices that can generate oscillating current or have a filtering effect, and is also called a resonant circuit, tank circuit, or tuned circuit.May 26, 2020  ### How does an LC circuit produce an AC current?

We start with an idealized circuit of zero resistance that contains an inductor and a capacitor, an LC circuit. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor.

### What is the difference between RC and LC circuit?

The decay of current and voltage transients in RC and RL circuits is caused by energy dissipation in the resistor. In contrast, an LC circuit, which has a capacitor connected to an inductor, ideally has no resistance or energy loss, and exhibits very different behavior.

### What is the current in LC circuit?

Finally, the current in the LC circuit is found by taking the time derivative of q(t): i(t)=dq(t)dt=−ωq0sin(ωt+ϕ).Nov 5, 2020

### What is the phase difference in LC circuit?

So putting these facts together we can conclude that given an AC series current the voltages across any L and C must have a phase difference of 180˚.

### What is the resonant frequency of LC circuit?

Resonant frequency of a LC circuit is 10 kHz.

### Why is current supplied to a series LC circuit maximum?

• 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.

### What is the difference between a series and parallel resonant LC circuit?

• A series resonant LC circuit is used to provide voltage magnification. A parallel resonant LC circuit is used to provide current magnification and also used in the RF amplifier circuits as the load impedance, the amplifier’s gain is maxed at the resonant frequency.

### What is transient current in LC circuit with DC supply?

• Transient Current in an LC circuit with a DC supply. Here is a LC circuit with a DC supply. When the switch is closed at t=0 capacitor behaves as a short circuit while the inductor behaves as an open circuit as the voltage across the inductor immediately jumps to battery voltage.

### What are the applications of LC circuits in electronics?

• The applications of these circuits mainly involve in transmitters, radio receivers, and TV receivers. Consider an LC circuit in which capacitor and inductor both are connected in series across a voltage supply. The connection of this circuit has a unique property of resonating at a precise frequency termed as the resonant frequency.

### How to design series LC circuit?How to design series LC circuit?

To design Series LC circuit and find out the current flowing thorugh each component. Inductance, Capacitor, AC power source, ammeter, voltmeter, connection wire etc.. The schematic diagram below shows an ideal series circuit containing inductance and capacitance but no resistance.

### Why is current supplied to a series LC circuit maximum?Why is current supplied to a series LC circuit maximum?

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.

### What is the difference between a series and parallel resonant LC circuit?What is the difference between a series and parallel resonant LC circuit?

A series resonant LC circuit is used to provide voltage magnification. A parallel resonant LC circuit is used to provide current magnification and also used in the RF amplifier circuits as the load impedance, the amplifier’s gain is maxed at the resonant frequency.

### What is the difference between LC and RLC circuits?What is the difference between LC and RLC circuits?

At that instant the current is changing at the rate of: An LC circuit has a capacitance of 30 µF and an inductance of 15 mH. At time t = 0 the charge on the capacitor is 10 µC and the current is 20 mA. The maximum current is: An RLC circuit has a resistance of 200 Ω and an inductance of 15 mH. Its oscillation frequency is 7000 Hz.