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An inductor is said to block ac but in transformer which is two inductors coupled together how can it allow an ac current?
Wiki User
∙ 11y ago
While it is true that an inductor opposes the flow of an alternating current, it does not necessarily 'block it'. The quantity that opposes the flow of an AC current is the inductor's inductive reactance, expressed in ohms. Inductive reactance is proportional to the frequency of the supply voltage and, at 50 or 60 Hz, the reactance of a transformer's winding is relatively low (although very much higher than its resistance) and, while this acts to limit the amount of current flow, it certainly doesn't act to block that flow.
Wiki User
∙ 11y ago
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What is intercell transformer?
A Conventional fly back converter is revamped using an intercell transformer,unlike a normal transformer Construction of inter cell transformer varies by usage of coupled inductors where compactness , overall efficiency and cost effectiveness are dramatically improved
How dc supply is applied to field coil in a brush less alternator?
Through a coupled inductor, similar to a transformer, but working on DC instead of AC.
Is magnetic coupling or inductive coupling are same?
A plain mag coupler uses magnets to replace the field and armature coils in a brushless dc motor. Then two shafts are coupled together, but to remain coupled they have to be synchronous (rotating at the same speed). If one shaft has a drive motor and the other has the load (fan blades for example) if the load exceeds the maximum torque they slip and are no longer coupled together (the blades will stop turning until the motor stops and restarts). A mechanical inductive coupling has a squirrel cage similar to an induction motor. This allows the transmission of torque without having to have the same speed. Also, inductive coupling can refer to transmitting electrical power through coupled inductors or a transformer.
What is What is the difference between conductor and inductor?
A conductor is that one which allows the flow of electric current through it. An inductor is also a conductor but in the form of a coil used in varying current circuits. An inductor's role is not to conduct electricity; it is used in alternating current circuits and control it without much power loss. it is based on self induction.
Why transformer coupled amplifier is more efficient than RC coupled amplifier?
an RC coupled amplifier is basically used for voltage amplification , where the circuit currents are quite low. higher currents & voltages would mean more dissipation in the load resistors , which is essentially very lossy . The coupling amplitude to the next stage is ideally the same as the previous stage signal excursion. However if a transformer is used for coupling , both large voltages & current can be handled without incurring the dissipation of a resistive load. Moreover a coupling gain of the transformer primary to secondary ratio is also a bonus. also because of the possiblity of correct impedance matching on the primary & secondary side maximum power coupling is obtained. hence transformer coupling is more efficient in such applications. in high frequency applications transformer coupling , along with tuned circuits as applicable is the choice circuit.
What is a electric transformer?
A combination of inductors coupled together by high mutual inductances. Or more simply several coils wound together on the same armature.
What is intercell transformer?
A Conventional fly back converter is revamped using an intercell transformer,unlike a normal transformer Construction of inter cell transformer varies by usage of coupled inductors where compactness , overall efficiency and cost effectiveness are dramatically improved
Different types of inductors?
There are a variety of types of inductors. These include coupled inductors, multi-layer inductors, ceramic core inductors, as well as molded inductors.
How dc supply is applied to field coil in a brush less alternator?
Through a coupled inductor, similar to a transformer, but working on DC instead of AC.
Can you give DC supply to transformer?
no..you cannot..it works on mutual inductactance....its made up of two inductors..the rate of change of current in AC induces a back emf,i.e.voltage which gets coupled to the second inductor or secondary windingAdditional AnswerDue to the low resistance of the primary winding, applying the rated voltage, but DC, to the transformer will result in a large primary current -possibly sufficiently high to overheat the insulation and cause a short-circuit. In other words, it might burn out the primary.
Advantage of a transformer over a transformer coupled circuit?
Sounds more like a "homework" or "test" question, rather than a real-world question, and vague, at that! Could you re-phrase your question in a better, more-precise context, or check it for typos? Right now, your question seems to ask "What's the advantage of using a transformer, instead of using a transformer-coupled circuit?"...which makes no sense, since a "transformer-coupled circuit" USES a transformer.
Is magnetic coupling or inductive coupling are same?
A plain mag coupler uses magnets to replace the field and armature coils in a brushless dc motor. Then two shafts are coupled together, but to remain coupled they have to be synchronous (rotating at the same speed). If one shaft has a drive motor and the other has the load (fan blades for example) if the load exceeds the maximum torque they slip and are no longer coupled together (the blades will stop turning until the motor stops and restarts). A mechanical inductive coupling has a squirrel cage similar to an induction motor. This allows the transmission of torque without having to have the same speed. Also, inductive coupling can refer to transmitting electrical power through coupled inductors or a transformer.
Inductor and capacitor?
An inductor is a magnetic device that resists a change in current. It is constructed with windings that can be backed by ferro-magnetic cores. The equation of an inductor is ... di/dt = V/L ... meaning that the rate of change of current per time is proportional to voltage and inversely proportional to inductance. Inductors, since they work on magnetic fields, can be coupled, as transformers, motors, and generators. A capacitor is a charge device that resists a change in voltage. It is constructed with parallel plates. The equation of a capacitor is ... dv/dt = I/C ... meaning that the rate of change of voltage per time is proportional to current and inversely proportional to capacitance. Inductors and capacitors, since they work in opposite phasor angles, can be coupled to make resonant filters, giving bandpass or bandcut to particular frequencies.
What is a transformer-coupled class A amplifier?
A transformer-coupled class A amplifier is just what it says it is. You'll recall that a class A amp is one that has an output that varies through all 360 degrees of an input signal. As regards the manner in which the signal is coupled to or from the stage, a transformer is used, complete with the non-linearity that it will introduce because of the characteristics of the (untuned) inductive component.
Why a transformer is known as electrical isolator?
because its primary and secondary are electrically isolated and magnetically coupled
What is circuit coupling?
A coupling circuit connects the output of one stage of a system to the input of another stage. There are many different types of coupling circuits (e.g. direct coupled, resistor coupled, capacitor coupled, transformer coupled) each with its own advantages and disadvantages.
How do you use coupled in a sentence?
The train cars coupled together with a loud bang.
