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Electrical resonant circuit
An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter
LC_circuit
Variety of resonant circuit
An LC circuit can be quantized using the same methods as for the quantum harmonic oscillator. An LC circuit is a variety of resonant circuit, and consists
Quantum_LC_circuit
Resistor Inductor Capacitor Circuit
components may vary from RLC. The circuit forms a harmonic oscillator for current, and resonates in a manner similar to an LC circuit. Introducing the resistor
RLC_circuit
Rate of change of angle
series LC circuit equals the square root of the reciprocal of the product of the capacitance (C, with SI unit farad) and the inductance of the circuit (L
Angular_frequency
Canceling impedances at a particular frequency
simple harmonic oscillator. At resonance, the series impedance of the LC circuit is at a minimum and the parallel impedance is at maximum. Resonance is
Electrical_resonance
Superconducting circuit element
to form a nonlinear oscillator, similar to a LC circuit, with a current-dependent inductance. Circuits with Josephson junctions are used to make superconducting
Josephson_junction
Electric circuit composed of resistors and capacitors
synthesise LC circuits. In the case of Cauer synthesis, a ladder network of resistors and capacitors will result. RC time constant RL circuit LC circuit RLC
RC_circuit
Type of electronic circuit
receivers. Typical LC oscillator circuits are the Hartley, Colpitts, Clapp and cross-coupled LC oscillator. In a crystal oscillator circuit the filter is a
Electronic_oscillator
between the tube and tank (LC circuit). The schematic shows an example with component values. The Seiler oscillator uses a LC circuit L1, C1 that is connected
Seiler_oscillator
Electronic oscillator
oscillator circuit in which the oscillation frequency is determined by a tuned circuit consisting of capacitors and inductors, that is, an LC oscillator
Cathode_follower_oscillator
Two systems are coupled if they are interacting with each other
in an unconnected LC circuit, the circuits are said to be coupled. The coefficient of coupling k defines how closely the two circuits are coupled and is
Coupling_(physics)
Type of signal filter
capacitance, respectively. The circuit forms a harmonic oscillator for current and will resonate in a similar way as an LC circuit will. The main difference
Low-pass_filter
Metal structure which confines microwaves or radio waves for resonance
the stored magnetic energy at resonance as is the case for a resonant LC circuit. In terms of inductance and capacitance, the resonant frequency for a
Microwave_cavity
Meter that displays the frequencies of an electronic signal
system consisting of a single tunable LC circuit and a separate voltmeter or ammeter. The user tunes the LC circuit, typically through a variable capacitor
Frequency_meter
Assemblage of connected electrical elements
analogy (Trent analogy) Bridge circuit LC circuit RC circuit RL circuit RLC circuit Potential divider Series and parallel circuits Kumar, Ankush; Vidhyadhiraja
Electrical_network
Electronic oscillator circuit
LC circuit (tank circuit L1 and C in the figure on the right) and is approximately given by f = 1 2 π L C {\displaystyle f={\frac {1}{2\pi {\sqrt {LC}}}}\
Armstrong_oscillator
Electrical resonant transformer circuit invented by Nikola Tesla
together function as two LC circuits, "tuned" so they have the same resonant frequency, and each spark briefly completes a circuit on the primary side, producing
Tesla_coil
LC oscillator design
connected to its input in a feedback loop containing a parallel LC circuit (tuned circuit), which functions as a bandpass filter to set the frequency of
Colpitts_oscillator
Instrument to measure radio wave frequency
terminals of the LC circuit is a diode, then between the end of the diode not wired to the LC circuit and the terminal of the LC circuit not bearing the
Absorption_wavemeter
Electronic oscillator
oscillator circuit in which the oscillation frequency is determined by a tuned circuit consisting of capacitors and inductors, that is, an LC oscillator
Hartley_oscillator
Topics referred to by the same term
1990s Macintosh LC, the first computer in the Macintosh LC family LC-type optical fiber connector LC circuit, in electronics, a circuit with an inductor
LC
Resistive and inductive circuit
linear circuit elements are the resistor (R), capacitor (C) and inductor (L). They can be combined to form the RC circuit, the RL circuit, the LC circuit and
RL_circuit
Topics referred to by the same term
and parallel circuits, two ways in which electrical components may be interconnected Simple filters, including: LC circuit or tank circuit, consisting
Circuit
Type of wireless power transfer
frequency tuned with capacitors to create a transmitter and receiver LC circuit with a specific resonance frequency. The frequency is chosen depending
Inductive_charging
gridleak resistor parallel to the gridleak capacitor. In Fig. 3, the LC circuit L and C select the receiver frequency. C2 is the gridleak capacitor and
Audion_receiver
Device which extracts info from a modulated radio frequency current or voltage
signal by 90 degrees. This phase-shifted signal is then applied to an LC circuit, which is resonant at the FM signal's unmodulated, "center," or "carrier"
Detector_(radio)
Property that an increasing voltage results in a decreasing current
source in series with a large resistor) and series resonant circuit LC. The series LC circuit has low impedance only at its resonant frequency and so will
Negative_resistance
Credential used to gain entry to an area
radiates a 1" to 5" electrical field around itself. Cards use a simple LC circuit. When a card is presented to the reader, the reader's electrical field
Access_badge
Electronic circuit
impedance top of the LC circuit C0, C1, C2, L1 and the amplifier output, the source, is connected to the low impedance tap of the LC circuit. The grid leak
Clapp_oscillator
Electronic musical instrument
hence natural resonant frequency of an LC circuit inductively coupled to another fixed LC oscillator circuit operating at a slightly higher resonant
Theremin
Two-port non-reciprocal network element
a gyrator can make a capacitive circuit behave inductively, a series LC circuit behave like a parallel LC circuit, and so on. It is primarily used in
Gyrator
High-frequency AC generator for radio transmission
the impedance presented by the LC circuit increases, and the amplitude of the RF signal getting through the LC circuit drops. The feedback signal to the
Alexanderson_alternator
Type of electronic oscillator
parallel LC circuit can naturally generate a sinusoidal signal at its resonance frequency: ω 0 = 1 L C {\displaystyle \omega _{0}={\frac {1}{\sqrt {LC}}}}
Cross-coupled_LC_oscillator
Device for storing charged particles
coil and the parasitic capacitances of the circuit form a LC circuit with a Q of about 50 000. The LC circuit is excited by an external electric pulse.
Penning_trap
Electrical capacitor used in electric motors
physically turned, creating a phase shift. A start capacitor stays in the circuit long enough to rapidly bring the motor up to a predetermined speed, which
Motor_capacitor
Electrical network theorem
parallel LC circuit is the dual of the series circuit and hence its admittance function is the same form as the impedance function of the series circuit, Y
Foster's_reactance_theorem
Computer input device
tablet generates an electromagnetic signal, which is received by the LC circuit in the stylus. The wires in the tablet then change to a receiving mode
Graphics_tablet
Discrete device in an electronic system
of passive component: RC network – forms an RC circuit, used in snubbers LC Network – forms an LC circuit, used in tunable transformers and RFI filters
Electronic_component
Resonator damping parameter
parallel LC circuit where the main loss is the resistance of the inductor, R, in series with the inductance, L, Q is as in the series circuit. This is
Q_factor
Basic structure in power electronics
current. This is done so that an inductor and a capacitor can be used in an LC circuit to change the voltage. This is, in theory, a lossless process; in practice
Commutation_cell
Type of electronic circuit
quickly while exposed to both full voltage and full current Resonant An LC circuit shapes the voltage across the transistor and current through it so that
DC-to-DC_converter
Topics referred to by the same term
Africa Tank (unit), an obsolete unit of measure in India LC circuit, also called a tank circuit Mitzvah tank, a large vehicle used as a portable educational
Tank_(disambiguation)
Phenomenon with inductive coupling
a coupled LC circuit. The most basic resonant inductive coupling consists of one drive coil on the primary side and one resonance circuit on the secondary
Resonant_inductive_coupling
Device that changes direct current (DC) to alternating current (AC)
waves with LC circuits to remove the harmonics from a simple square wave. Typically there are several series- and parallel-resonant LC circuits, each tuned
Power_inverter
Type of signal processing filter
mass and stiffness. This translates in electrical terms to an LC circuit, that is, a circuit consisting of an inductor and a capacitor, hence mechanical
Mechanical_filter
Device that controls current between electrodes
the dynatron oscillator circuit to produce a simple oscillator only requiring connection of the plate to a resonant LC circuit to oscillate. The dynatron
Vacuum_tube
Systems that do not produce or consume energy
addition, passive circuits will not necessarily be stable under all stability criteria. For instance, a resonant series LC circuit will have unbounded
Passivity_(engineering)
Point of entry and exit of electrical energy to/from a circuit
especially in filter design. Two-element one-ports (that is RC, RL and LC circuits) are easier to synthesise than the general case. For a two-element one-port
Port_(circuit_theory)
Electrical circuit
frequency port. Any oscillations in the capacitor or the coil or the composed LC circuit are damped by the dielectric and the core. Also the small coil should
Bias_tee
Design technique for linear electrical circuits
reactance theorem. Foster's theorem provided a method of synthesising LC circuits with arbitrary number of elements by a partial fraction expansion of
Network_synthesis
Mathematical descriptions of transmission line voltage and current
Kelvin's preliminary work on this subject LC circuit Reflections of signals on conducting lines RLC circuit Smith chart Hayt, William H. (1989). Engineering
Telegrapher's_equations
Technology in electrical engineering
capacitance to be sensed forms a portion of the oscillator's RC circuit or LC circuit. The capacitance can be calculated by measuring the charging time
Capacitive_sensing
Increase in voltage at a long AC power line
, hence in increased voltage on the receiving side. LC circuit "A series resonant circuit provides voltage magnification." Reflections of signals
Ferranti_effect
Electrical transmission without physical connection
he could light a lamp by using a receiving LC circuit tuned to resonance with the transmitter's LC circuit. using resonant inductive coupling. Tesla failed
Wireless_power_transfer
Type of radio antenna
along each element (both sides) at which point a parallel LC (inductor and capacitor) circuit is inserted. This so-called trap has the effect of truncating
Yagi–Uda_antenna
Electronic filter that is constructed with waveguide technology
resonators of some kind that can be modelled as a ladder network of LC circuits. One of the most common types consists of a number of coupled resonant
Waveguide_filter
Harmonic oscillator whose parameters oscillate in time
apply the concept to electric circuits was George Francis FitzGerald, who in 1892 tried to excite oscillations in an LC circuit by pumping it with a varying
Parametric_oscillator
Passive two-terminal electrical component that stores energy in its magnetic field
goniometer) Hanna curve Induction coil Induction cooking Induction loop LC circuit RLC circuit Saturable reactor – a type of adjustable inductor Accumulator (energy)
Inductor
Property of electrical conductors
Electromagnetic induction Gyrator Hydraulic analogy Leakage inductance LC circuit, RLC circuit, RL circuit Kinetic inductance The integral is called "logarithmically
Inductance
Device for generating microwaves
the slot act as a capacitor while the round holes form an inductor: an LC circuit made of solid copper, with the resonant frequency defined entirely by
Cavity_magnetron
Lamp using fluorescence to produce light
simple oscillator and series resonant LC circuit. This principle is called the current resonant inverter circuit. After a short time the voltage across
Fluorescent_lamp
oscillation, ferroresonance exhibits substantial differences from a classical LC circuit. In particular, it occurs at a range of frequencies (often near harmonics
Ferroresonance in electricity networks
Ferroresonance_in_electricity_networks
Type of electrical switch
suppressing arcing, it helps boost the coil output by creating a resonant LC circuit with the coil windings. A drawback of using a mechanical switch as part
Contact_breaker
Variables that are Fourier transform duals
The electric potential (φ, voltage) and electric charge in a quantum LC circuit. The magnetic potential (A) at an event is the derivative of the action
Conjugate_variables
Electrical resonant transformer circuit
increase the distance by using a receiving LC circuit tuned to resonance with the Tesla coil's LC circuit, transferring energy by resonant inductive coupling
History_of_the_Tesla_coil
Electronic access and authorization system
strength of the electric field measuring the response time of 125 kHz LC circuit using a more complex modulation (i.e. quadrature amplitude modulation)
Smart_key
Disruption to reception of television signals
electricity passes through L and excites the resonant LC circuit. The energy in the LC circuit is then radiated through the aerial. As an example, when
Television_interference
Matter which can change its physical properties in a programmable fashion
ground over synthetic inductors. Around the resonance frequency of the LC circuit formed by the piezoelectric and the inductors, the piezoelectric elements
Programmable_matter
Type of radio receiver
the IF stage. Early receivers used LC tuned circuits for IF filtering, usually double-tuned, meaning two LC circuits per stage. Later designs employed
Superheterodyne_receiver
stimulated emission of radiation". law of universal gravitation LC circuit A circuit consisting of an inductor (with inductance L) and a capacitor (with
Glossary_of_physics
Linear oscillator circuit using an RC network
difficult than in other types such as the LC oscillator, in which the frequency is determined by a single LC circuit so only one element must be varied. Although
RC_oscillator
Filter that rejects signals inside a certain range
content will not be exceeded. Wave trap A notch filter, usually a simple LC circuit, is used to remove a specific interfering frequency. This is a technique
Band-stop_filter
Theorem in electrical engineering
send it back after a quarter cycle. The resultant circuit is nothing other than a resonant LC circuit in which the energy continues to oscillate back and
Maximum power transfer theorem
Maximum_power_transfer_theorem
Capacitive light source in the form of a wire
can be driven by AA batteries for several hours. In recent years, the LC circuit has been replaced for some applications with a single chip switched capacitor
Electroluminescent_wire
Oscillator whose frequency can be tuned over some range
references, which can be made to a higher standard than semiconductor and LC circuit-based alternatives. Most commonly a quartz crystal based oscillator is
Variable-frequency_oscillator
Of amplifiers with unequal stage tuning
0.75 dB points of an individual stage. The fractional bandwidth of an LC circuit is given by, B = m − 1 Q {\displaystyle B={{\sqrt {m-1}} \over Q}} where
Staggered_tuning
Electronic oscillator
resonance detection circuits. The simplest detection circuit (the transmission circuit) uses a drive oscillator to inject a current into an LC resonator. If
Robinson_oscillator
Materials engineered to have properties that have not yet been found in nature
the open section acts as a capacitor C. The ring as a whole acts as an LC circuit. When the electromagnetic field passes through the ring, an induced current
Metamaterial
Quantum computing implementation
constructed using superconducting resonant circuits. Each superconducting qubit is essentially a nonlinear LC circuit with a capacitor and a Josephson junction
Superconducting quantum computing
Superconducting_quantum_computing
French astronomer (1797–1841)
Mémoire sur l'application du calcul aux phénomènes électro-dynamiques. LC circuit Felix Savary, biography, J. J. O'Connor and E. F. Robertson, MacTutor
Félix_Savary
frequency of the AC system The TSC forms an inductor-capacitor (LC) resonant circuit with a characteristic frequency of : f t s c = 1 2 π C t s c L t
Thyristor-switched_capacitor
Type of DC-to-DC converter
transistors and the transformer and the inductance of the transformer form an LC circuit which swings to the opposite polarity. Then the other transistor turns
Push–pull_converter
Electric motor driven by an AC electrical input
motor capacitor inserted in series with the startup winding, creating an LC circuit which produces a greater phase shift (and so, a much greater starting
AC_motor
Japanese electrical engineer
and the shorter director (right) each have a so-called trap (parallel LC circuit) inserted along their conductors on each side, allowing the antenna to
Hidetsugu_Yagi
Thought experiment in physics
a steady state, as assumed in the description. It will constitute an LC circuit with no damping, so the charge will oscillate perpetually back and forth
Two_capacitor_paradox
fields DC circuits, general definitions AC circuits General Classical Equations General classical equations Below N = number of conductors or circuit components
List of electromagnetism equations
List_of_electromagnetism_equations
Implant used in animals
it from the scanner. The coil and capacitor together form a resonant LC circuit tuned to the frequency of the scanner's oscillating magnetic field to
Microchip_implant_(animal)
Electronic oscillator circuit
overtone crystal. To accomplish this, the oscillator circuit usually includes additional LC circuits to select the desired overtone. A crystal's frequency
Crystal_oscillator
Figure of merit for amplifiers
device for a given frequency (or bandwidth) and vice versa. When adding LC circuits to the input and output of an amplifier the gain rises and the bandwidth
Gain–bandwidth_product
Signal processing conducted on analog signals
Resistor Signal Signal processing Transistor RC circuit LC circuit RLC circuit Series and parallel circuits Band-pass filter Band-stop filter High-pass filter
Analog_signal_processing
Type of voltage sampling device
In electronics, a sample and hold (also known as sample and follow) circuit is an analog device that samples (captures, takes) the voltage of a continuously
Sample_and_hold
Personal computer series released by Apple Computer
The Macintosh LC 500 series is a series of personal computers that were a part of Apple Computer's Macintosh LC family of Macintosh computers, designed
Macintosh_LC_500_series
College Board examinations
instead covers calculations involving electric flux, inductance, RL circuits, LC circuits, and the equations of Maxwell and Biot-Savart. These topics are
AP_Physics
common anode circuit is a tuned LC circuit where the anodes are connected at a voltage node. This circuit is often known as the anode tank circuit. An example
Valve_transmitters
Branch of physics
oscillation into electrical oscillation. LC oscillators have resonances in the microwave frequency range; therefore, LC circuits are also termed microwave resonators
Cavity_optomechanics
American dramatist
oscillator known as a critically damped tank circuit at or near resonance (sometimes called an LC circuit), providing as well a multi-dimensional "experience
J._Nigro_Sansonese
Form taken by the network of interconnections of a circuit
The RC, RL and LC circuits are simple two-element-kind networks. The RLC circuit is the simplest three-element-kind network. The LC ladder network commonly
Circuit_topology_(electrical)
Data input device
radiates a 1" to 20" electrical field around itself. Cards use a simple LC circuit. When a card is presented to the reader, the reader's electrical field
Card_reader
Instrument to measure radio frequency circuits
overwhelms the responding circuit, and forces it to oscillate regardless of the frequency. The heart of the instrument is a tunable LC circuit whose exposed external
Grid_dip_oscillator
Dimensionless parameter
second resonant parallel-type networks. When the resonators are resonant LC-circuits the coupling coefficient in accordance with (2) and (3) takes the value
Coupling coefficient of resonators
Coupling_coefficient_of_resonators
LC CIRCUIT
LC CIRCUIT
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LC CIRCUIT
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LC CIRCUIT
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LC CIRCUIT