noun
definition
A coil of wire that acts as a magnet when an electric current flows through it.
definition
A mechanical switch consisting of such a coil containing a metal core, the movement of which is controlled by the current.
Examples of solenoid in a Sentence
The solenoid was above the iron cylinder, the supporting rod of which passed through it as a core.
Ampere had already previously shown that a spiral conductor or solenoid when traversed by an electric current possesses magnetic polarity, and that two such solenoids act upon one another when traversed by electric currents as if they were magnets.
At once the attractive force of the solenoid on the iron cylinder was automatically reduced, and the falling of the latter caused the negative carbon to rise, starting an arc between it and the metal in the crucible.
Immediately the current passed through the solenoid it caused the iron cylinder to rise, and, by means of its supporting rod, forced the end of the balance beam upwards, so depressing the other end that the negative carbon rod was forced downwards into contact with the metal in the crucible.
A counterpoise was placed on the solenoid end of the balance beam to act against the attraction of the solenoid, the position of the counterpoise determining the length of the arc in the crucible.
Any change in the resistance of the arc, either by lengthening, due to the sinking of the charge in the crucible, or by the burning of the carbon, affected the proportion of current flowing in the two shunt circuits, and so altered the position of the iron cylinder in the solenoid that the length of arc was, within limits, automatically regulated.
In the second, or " braking off " method, the brake is automatically applied by a spring or weight, and is released either mechanically or, in the case of electric cranes, by the pull of a solenoid or magnet which is energized by the current passing through the motor.
Such a filament is called a simple magnetic solenoid, and the product aI is called the strength of the solenoid.
If the magnetization is parallel to the major axis, and the lengths of the major and minor axes are 2a and 2C, the poles are situated at a distance equal to 3a from the centre, and the magnet will behave externally like a simple solenoid of length 3a.
The fixed and suspended coils of the dynamometer are respectively connected in series with the magnetizing solenoid and with a secondary wound upon the specimen.
This rod was connected with the negative pole of the generator, and was suspended from one arm of a balance-beam, while from the other end of the beam was suspended a vertical hollow iron cylinder, which could be moved into or out of a wire coil or solenoid joined as a shunt across the two carbon rods of the furnace.
Often the magnet is a superconducting solenoid coil which requires cooling to the temperature of liquid helium.
The pump also has a fuel cutoff valve, operated by a solenoid with a removable coil.
The weapon shown has a solenoid fitted on the right hand side of the body.
He's wrong actually - it's current that drives a solenoid.
The drivers side battery feeds the hot side of the car up to the starter solenoid off its negative post.
Use Ampère's law to calculate the flux density inside a long solenoid.
Starting is easy, thanks to an automatic decompressor operated by electric solenoid.
Others use an " idle stop solenoid " that closes the throttle completely to shut of the engine's air supply.
Group has a three way solenoid to release pressure in the group handle after brewing.
The appropriate setting of the opening time of the solenoid valves presents a problem.
He 's wrong actually - it 's current that drives a solenoid.
Use Ampère 's law to calculate the flux density inside a long solenoid.
Firstly a solenoid valve opens which admits water at 1.7 bar pressure to flush the bowl.
Motor control is provided by a solenoid switch for simplicity.
The solenoid unit has its own built-in start switch with normally open contacts brought out to sockets.
Check the relay coil in the same way as a solenoid coil, if you do not find any mechanical problems.
Reassemble the parts taking great care over the seating of the ball bearing and slide the solenoid assembly back into place.
Fuel servo solenoid valve (N p overspend).
Others use an " idle stop solenoid " that closes the throttle completely to shut of the engine 's air supply.
The wiring loom had been secured by metal clips to the heavy 12 volt cable from the battery to the starter solenoid.
These type of guns use electromagnetic polarization that shoves the nail from the solenoid into the wood.
Solenoid guns have a tendency to last longer than other nail guns because there are less parts to go wrong.
If you expect a project to last a long time or plan to complete more than one project, then a solenoid nail gun is the way to go.
Starter Solenoid - You could also have a bad starter solenoid.