Contents
How the LC oscillations are produced?
Whenever we connect a charged capacitor to an inductor the electric current and charge on the capacitor in the circuit undergoes LC Oscillations. The process continues at a definite frequency and if no resistance is present in the LC circuit, then the LC Oscillations will continue indefinitely.
What are LC oscillations explain?
LC oscillations- The electric current and the charge on the capacitor in the circuit undergo electrical LC oscillations when a charged capacitor is connected to an inductor. The electrical energy stored in the capacitor is its initial charge which is named as qm.
What are the applications of LC oscillations?
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 does an LC circuit continue to oscillate?
Oscillations in an LC circuit will continue indefinitely (similar to mechanical oscillations without damping). The stored energy in the electric and magnetic fields oscillates in the same way as the KE and PE in mechanical systems.
How to find the condition for Sustained oscillation?
When the imaginary part of β is zero, the expression of the oscillation frequency f 0 can be deduced. The condition for sustained oscillation can be found by cancelling out the real part of the operating equation of the oscillator. − L 1 L 2 C ω 0 2 h 21 + − L 1 L 2 C ω 0 2 + L 2 + − L 1 L 2 C ω 0 2 + L 1.
How is an amplifier used to sustain oscillations?
An amplifier element is very often used in order to sustain low- or high-frequency oscillations. The type of oscillator circuit that uses an amplifier circuit and an oscillating circuit on a feedback loop is called a “feedback oscillator”. In this chapter, we study this device in the field of low frequencies.
How are the oscillations of a circuit attenuated?
The stored energy in the electric and magnetic fields oscillates in the same way as the KE and PE in mechanical systems. The oscillations will gradually be attenuated by introduction of a resistance to the circuit.