Table of Contents
What is the purpose of a choke in electronics?
A choke, also known as an inductor, is used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit. The name comes from blocking, or “choking”, high frequencies while passing low frequencies.
What is the purpose of choke in Tubelight?
Choke is an inductor; hence it acts as a pure inductor. Inductor is having the properties of creating high voltage at stating. This high voltage is enough to trigger the tube lights starter.
Why choke coil is used in transformer?
A choke coil is a part used in electrical circuits to allow DC current to flow through while blocking AC current from passing. When the current passing through changes, as AC currents do, it typically creates a magnetic field in the coil that works against that current.
Why is choke coil preferable to resistor?
A choke coil is preferred over resistances in a.c. circuit because a choke coil has large value of self inductance and hence, the power dissipation is 0 for choke coil. 1 there will be no effect on the flow of current as resistance is independent of frequency.
On what principle does choke work?
self induction
Hint: A choke coil works by the principle of self induction. Its main function is to provide AC resistance to the circuit.
What is the purpose of the choke?
A choke valve is sometimes installed in the carburetor of internal combustion engines. Its purpose is to restrict the flow of air, thereby enriching the fuel-air mixture while starting the engine.
Why do we use choke?
In electronics, a choke is an inductor used to block higher-frequency alternating currents while passing direct current (DC) and lower-frequencies alternating current (AC) in an electrical circuit. The name comes from blocking—”choking”—high frequencies while passing low frequencies.
What are pros and cons of using LC filters?
The choke input (LC) filter has a high output D.C voltage. It has no loading effect on the rectifier and power transformer. The diode does not have to carry surge currents. It has a very low ripple factor as compared to series inductor filter and shunt capacitor filter.
Why choke coil Cannot be used in DC?
because for direct currents, The inductive reactance , of the coil is zero. only the resistance of the coil remains effective which is too almost zero.
Why is a choke used in tube lights?
The purpose of the choke is to provide a very high voltage initially between the filaments (across the two ends of the tube light). Again once the gas in the tube is ionized the choke provides a low voltage. A choke is a coil of wire.
Why are chokes used in DC power supplies?
Chokesfilter out AC ripples in DC power supplies (linear or switch mode) to ensure a steady, smooth DC output by reducing ripple voltage and ripple current. When used in RF (Radio Frequency) applications, chokes are designed to pass only DC and exclusively prevent everything else from going through.
Why are CM chokes used in industrial applications?
CM chokes are commonly used in industrial, electrical and telecommunications applications to remove or decrease noise and related electromagnetic interference. When the CM choke is conducting CM current, most of the magnetic flux generated by the windings is confined with the inductor core because of its high permeability.
How does an audio frequency choke increase inductance?
Audio frequency choke. Audio frequency chokes (AFC) usually have ferromagnetic cores to increase their inductance. They are often constructed similarly to transformers, with laminated iron cores and an air gap. The iron core increases the inductance for a given volume of the core.