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mic or moving iron coil is instrument type works on ac and dc
Jana Lockman
Wiki User
∙ 12y agoIf you've got a transducer like a phono cartridge or a magnetic microphone, the voltage it generates comes from moving a coil of wire through the field from a permanent magnet. (Technically you COULD use an electromagnet, but it is so much cheaper and simpler just to stick a small permanent bar magnet in the thing and call it good.)
The coil neither knows or cares whether the magnet is moving inside the coil or the coil around the magnet. Some people like to put the coil on the end of the stylus bar and move it around the magnet. This will give you crisper reproduction because the coil weighs less than the magnet and can move faster, but you've got to add amplification to make it work because smaller coils put out less voltage.
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What consists of a coil with an iron core and a movable iron bar?
A solenoid consists of a coil with an iron core and a movable iron bar. The term was coined by French physicist, Andre-Marie Ampere.
What joint is movable?
Cartilaginous are slightly movable, but the most prominent type of movable joints are synovial joints, such as the knee and shoulder, which are very movable.
Does your body have more movable or immovable joints?
your body has more movable joints
What do movable joints enable to the body to do?
Movable joints enable the body to make a wide range of movements.
What are the categories of joints based on their ability to move?
Synarthrotic or immovable, amphiarthrotic or slightly movable, and diarthrotic or freely movable.
What consists of a coil with an iron core and a movable iron bar?
A solenoid consists of a coil with an iron core and a movable iron bar. The term was coined by French physicist, Andre-Marie Ampere.
A what consists of a coil with an iron core and a movable iron bar?
A relay.
The movable iron bar in a relay is called a what?
A relay is made up of a coil with an iron core and a movable iron bar. The movable iron bar in a relay is called a switch.
What are movable fin and movable exhausts use for?
What are movable fin and movable exhausts use for? [Improve]
What is working of PMMC?
In PMMC meter or (D'Arsonval) meter or galvanometer all are the same instrument, a coil of fine wire is suspended in a magnetic field produced by permanent magnet. According to the fundamental law of electromagnetic force, the coil will rotate in the magnetic field when it carries an electric current by electromagnetic (EM) torque effect. A pointer which attached the movable coil will deflect according to the amount of current to be measured which applied to the coil. The (EM) torque is counterbalance by the mechanical torque of control springs attached to the movable coil also. When the torques are balanced the moving coil will stopped and its angular deflection represent the amount of electrical current to be measured against a fixed reference, called a scale. If the permanent magnet field is uniform and the spring linear, then the pointer deflection is also linear
Is a cartilaginous joint movable?
they are slightly movable
Is a movable pulley is fixed at all points?
Yes an elevator is a movable pulley!
What is the function of a movable pulley?
functions of movable pulley
How many movable joints are the body?
8 the human body contains 230 movable and slightly movable joints
What is a sentence with the word movable?
The film was very movable.The pillar is not movable because it is bolted into the ground.
Which bones of the skull are movable?
only the skull bone is movable
Which of skull bones are movable?
only the skull bone is movable
