0
When making an inductor of 1mH (or any other value), there are a number of considerations. At what frequency is the circuit going to be operated? What is the current flow in the circuit expected to be? There are some other variables that need accounting for, and these things have been addressed by the electronics types at the University of Surrey. A link is provided.
AnswerThe inductance of a coil is not affected by frequency. It is affected by the length of the coil, the cross-sectional area of the coil, the number of turns, and the permeability of the core (air, iron, etc.). Also, since the permeability of the core is the ratio of flux density to magnetising force and, therefore, the anticipated operating current is important so that it doesn't saturate.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoYou make an inductor by winding wire into a coil, sometimes around a ferromagnetic core.
Inductors work by resisting a change in current. They do this by setting up a magnetic field in a coil of wire. When that magnetic field attempts to change, because the current attempted to change, the bucking effect of the collapse or increase of the magnetic field causes the current to want to stay the same. This is manifest by an increase or decrease in the voltage across the inductor.
The equation of an inductor is ...
di/dt = v/L
... meaning that the rate of change of current is proportional to voltage and inversely proportional to inductance.
Even a straight piece of wire has inductance, but that is usually considered inconsequential. To form a true inductor, we wind the wire in loops, allowing the magnetic fields to cross couple and intensify themselves.
There are many ways to fabricate inductors, depending on what you want to achieve. Unfortunately, the calculation of the inductance, L, based on wire size, number of turns, spacing, and core characteristics, etc. is extremely complex, and difficult to show on WikiAnswers, because we don't support graphic images at this point. Please see the two Related Links below for more information.
Wiki User
∙ 13y agoA: If you desire to do by hand the process is simple but time consuming. After selecting the core select the wire gauge and fold this wire onto a stick small enough to pass trough the hole. The process is like sawing in-out. The stick should have two V shape cutout at both ends to receive the wire without unwind.
Add your answer:
Earn +20 pts
What is the use of resistance in a LC circuit?
every inductor has some resistance. In circuit diagram, ideal inductor is shown in series with a resistor(value being equal to coil's resistance) to make analysis easy.
What happens when a inductor reaches a steady state?
An inductor looks like a piece of wire to DC. It will thus look like a resistor, and inductor properties do not apply.
Why l is symbol for inductor?
inductor was invented by scientist lenz so it is denoted by l..
The resistance that an inductor poses to the flow of ac?
An inductor has two properties. The first is resistance(measured in ohms), which is due to the length, cross-sectional area, and resistivity of the conductor from which it is wound. The second is inductance (measured in henrys), which is due to the length of the inductor, its cross-sectional area, the number of turns, and the permeability of its core.The inductor's resistance limits the value of current flowing through the inductor. The inductor's inductance opposes any change in current.
Can we use a DC source with an inductor?
Yes, an inductor allows DC to pass through it. An inductor resists a change in current, proportional to inductance and voltage. At equilibirum, an ideal inductor has zero impedance. The differential equation for an inductor is di/dt = v / l
Why is an inductor used for?
what is an inductor used for
How do you increase the inductance in a inductor?
Since we know that inductance of an inductor depends on the length of inductor by the formula L=muAN*N/l, where l is the length of inductor. So by varying the length of inductor we say that inductance of inductor varies.
How do you make DC electric clean?
To remove fluctuations and make dc steadier, you can put an inductor in series and/or a capacitor in parallel.
What is the use of resistance in a LC circuit?
every inductor has some resistance. In circuit diagram, ideal inductor is shown in series with a resistor(value being equal to coil's resistance) to make analysis easy.
Is there no induced voltage in an inductor unless the current is changing?
In an ideal inductor, no, there is no voltage induced across an inductor unless the current in the inductor is changing. However, since there are no ideal inductors nor power supplies, eventually an inductor will draw a constant current, i.e. the limit of the power supply; and, since no inductor has zero ohms at equilibrium, that current will translate to voltage.
Suppose no energy given to inductor and a decreasing current is applied to it. emf will be produced and energy is given by it.so i think energy is not stored in inductor. it is its own property?
How do you propose to connect a decreasing current to the inductor ? The initial current through the inductor is zero, and you want to connect it to a current which is not zero and decreasing. At the instant you make the connection, the inductor current is zero, and it must rise to the non-zero value where you want it to begin decreasing. The current in the inductor cannot change from zero to something in zero time. As it rises from zero to the initial value, guess what . . . the inductor is storing energy in its magnetic field, while producing the usual voltage equal to [ L di/dt ].
How do you construct an inductor?
any conductor wound with few turns can be considered as an inductor
What happens when a inductor reaches a steady state?
An inductor looks like a piece of wire to DC. It will thus look like a resistor, and inductor properties do not apply.
What is working principle of inductor?
A changing current through an inductor induces a voltage into the inductor, the direction of which always opposes the change in that current.So, in a d.c. circuit, an inductor will oppose (not prevent) any rise or fall in current, although the magnitude of that current will be determined by the resistance of that inductor, not by its inductance.In an a.c. circuit, because the current is continuously changing both in magnitude and in direction, it acts to continuously oppose the current due to its inductive reactance. Inductive reactance is proportional to the inductance of the inductor and the frequency of the supply. The vector sum of the inductive reactance of the inductor and the resistance of the inductor, is termed the impedance of the inductor. Inductive reactance, resistance, and impedance are each measured in ohms.
What is meant by inductor and name the inductor device?
a coil. a component having the property of inductance.
When inductor is called short circuit and open circuit?
In DC inductor is short circuited .
What is the purpose of inductor?
The fundamental purpose of an inductor is to store electrical energy in a magnetic field.
