Solenoid/AC.Motor
A solenoid (from the French solénoïde, derived in turn from the Greek solen “pipe, channel” + combining form of Greek eidos “form, shape”[1]) is a coil wound into a tightly packed helix.
In physics, the term refers specifically to a long, thin loop of wire, often wrapped around a metallic core, which produces a uniform magnetic field in a volume of space (where some experiment might be carried out) when an electric current is passed through it. A solenoid is a type of electromagnet when the purpose is to generate a controlled magnetic field. If the purpose of the solenoid is instead to dampen changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet. Not all electromagnets and inductors are solenoids; for example, the first electromagnet, invented in 1824, had a horseshoe rather than a cylindrical solenoid shape.
In engineering, the term may also refer to a variety of transducer devices that convert energy into linear motion. The term is also often used to refer to a solenoid valve, which is an integrated device containing an electromechanical solenoid which actuates either a pneumatic or hydraulic valve, or a solenoid switch, which is a specific type of relay that internally uses an electromechanical solenoid to operate an electrical switch; for example, an automobile starter solenoid, or a linear solenoid, which is an electromechanical solenoid.
The Term Paper on Ref Angle 960 Degrees 1256
Table of Contents 1. Angles pg. 2 and 32. DMS and DD pg. 43. Reference Angles pg. 54. Sine, Cosine, Tangent pg. 6 and 75. Reciprocal Functions pg. 86. The Unit Circle and Quadrant Angles pg. 97. Unit Circle pg. 108. Using TI-82 and 83's to find Trig. Function Values pg. 119. Solving Right Triangle's pg. 1210. Law of Sines and Law of Cosines and The Ambiguous Case pg. 1311. Trigonometric Ratios pg. ...
Applications
Electromechanical solenoids
Electromechanical solenoids consist of an electromagnetically inductive coil, wound around a movable steel or iron slug (termed the armature).
Electromechanical solenoids are commonly seen in electronic paintball markers, pinball machines, dot matrix printers and fuel injectors.
Hydraulic solenoid valves
Hydraulic machinery uses solenoids to control the flow of oil to rams or actuators. Solenoid-controlled valves are often used in irrigation systems, where a relatively weak solenoid opens and closes a small pilot valve, which in turn activates the main valve by applying fluid pressure to a piston or diaphragm that is mechanically coupled to the main valve. Solenoids are also in everyday household items such as washing machines to control the flow and amount of water into the drum.
Automobile starter solenoid
In a car or truck, the starter solenoid is part of an automobile starting system. The starter solenoid receives a large electric current from the car battery and a small electric current from the ignition switch. When the ignition switch is turned on (i.e. when the key is turned to start the car), the small electric current forces the starter solenoid to close a pair of heavy contacts, thus relaying the large electric current to the starter motor.
Starter solenoids can also be built into the starter itself, often visible on the outside of the starter. If a starter solenoid receives insufficient power from the battery, it will fail to start the motor, and may produce a rapid ‘clicking’ or ‘clacking’ sound. This can be caused by a low or dead battery, by corroded or loose connections in the cable, or by a broken or damaged positive (red) cable from the battery. Any of these will result in some power to the solenoid, but not enough to hold the heavy contacts closed, so the starter motor itself never spins, and the engine doesn’t start.
The Essay on Electroplating Electric Current
ELECTROPLATING The problem was to discover which electrolyte is the best. An electrolyte is a liquid you electroplate in. Water, vinegar, and vinegar with salt stirred in it were the three electrolytes used. Which is the best electrolyte for copperplating a nickel Is there a difference between these electrolytes or are they all the same Electroplating is the process of coating with metal by means ...
