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What is the lowest frequency of an LC low-pass filter?
The lowest frequency of an LC low-pass filter is zero, i.e. DC.
Classification of oscillators?
Phase-shift oscillator Armstrong oscillator Cross-coupled LC oscillator RC oscillator
State the the frequency at antiresonance?
For a series a.c. circuit, resonance occurs when the inductive reactance is equal to the capacitive reactance. You can work out the frequency at which this occurs by inserting the variables into the following equation:XL = XC
What is a local oscillation?
A local oscillator is used in a superheterodyne radio circuit for example.The incoming radio frequency is mixed with an internal local oscillator circuit to generate a new intermediate frequency (IF) .The local oscillator usually runs at a frequency of 470kHz and is generated by an inductor and capacitor(LC oscillator)
How does a transistor act as a oscillator?
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.
Differetiate between LC oscillators and crystal controlled oscillators?
LC oscillators use inductors and capacitors to generate a frequency, while crystal controlled oscillators use a quartz crystal to establish the frequency. LC oscillators can be less stable and accurate compared to crystal controlled oscillators, which offer better precision and stability. Crystal controlled oscillators are commonly used in applications where precise frequency control is essential.
Why LC oscillator not suitable for audio frequency?
Another type of sine-wave generator uses inductors and capacitors for its frequency-determining network. This type is known as the LC OSCILLATOR. LC oscillators, which use tank circuits, are commonly used for the higher radio frequencies. They are not suitable for use as extremely low-frequency oscillators because the inductors and capacitors would be large in size, heavy, and costly to manufacture.
Why RC oscillators are not suitable for high frequency generation?
Because an RC oscillator is affected by stray capacitance in the active components in the circuit. HF oscillators use an LC tuned circuit to define the frequency.
What is the lowest frequency of an LC low-pass filter?
The lowest frequency of an LC low-pass filter is zero, i.e. DC.
State four types of LC oscillators?
Four types of LC oscillators include voltage controlled oscillators, drift control oscillators, crystal oscillators, and tuned circuit oscillators. A tuned circuit oscillator is the most common type of oscillator.
Classification of oscillators?
Phase-shift oscillator Armstrong oscillator Cross-coupled LC oscillator RC oscillator
What is the LC circuit equation used to calculate the resonant frequency of a 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.
What does the suffix LC mean?
The suffix LC typically stands for "low carbon" and is commonly used to refer to materials containing a low percentage of carbon.
What is a frequency range of LC oscillator?
depends on the oscillator and its purpose
Why L and C are connected in parallel in a LC filter?
LC are connected in parallel combination to short out signals too high or too low in frequency from getting to the load.FYI:Series LC circuits give minimum impedance at resonance, while parallel LC (“tank”) circuits give maximum impedance at their resonant frequency.The LC circuit behaves as an electronic resonator, which are the key component in many applications. Oscillators Mixers Graphics tablets Filters Electronic article surveillance & TunersFor example: a capacitor/inductor oscillator acts as the tuner for the radio.The sine wave that matches that particular frequency will get amplified by the resonator, and all of the other frequencies will be ignored. In a radio, either the capacitor or the inductor in the resonator is adjustable. This is how you "tune in" different stations on the radio :)In a nutshell: A series resonant circuit provides voltage magnification and a parallel resonant circuit provides current magnification.
What are electromagnetic oscillators?
when a charge oscillates for example in a capacitor it produce an electric field; which in turns produce a magnetic field in an inductance. the magnetic field oscillates perpendicular to the electric field and an electromagnetic waves perpendicular to both is produced.
What is Oscillator circuit?
An oscillator circuit is an electronic circuit that generates a periodic, oscillating signal, typically in the form of a sine wave or square wave. It converts direct current (DC) from a power supply into an alternating current (AC) signal. Oscillators are widely used in various applications, including clocks, radio transmitters, and signal generators, to create specific frequencies for communication and timing purposes. Common types include LC oscillators, RC oscillators, and crystal oscillators, each utilizing different components to achieve oscillation.
