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Anonymous users2024-02-05The landlord's "mouth" is very powerful.
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Anonymous users2024-02-04The main working principle of the relay is: when the change of the input quantity (excitation quantity) reaches the specified requirements, it is an electrical appliance that makes the controlled quantity change in the electrical output circuit with a predetermined step change. It has an interactive relationship between the control system (also known as the input loop) and the controlled system (also known as the output loop).
Usually used in the control circuit of automation, it is actually a kind of "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.
Relays are automatic switching elements with isolation functions, which are widely used in remote control, telemetry, communication, automatic control, and mechatronics.
and power electronics, which is one of the most important control components.
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Anonymous users2024-02-03When the relay is working, the electromagnet is energized, the armature is sucked into contact, and the working circuit is closed. When the electromagnet loses its magnetism when it is de-energized, the spring pulls the armature up and cuts off the working circuit. Therefore, the relay is a switch that uses an electromagnet to control the on/off of the working circuit.
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Anonymous users2024-02-02How the timing relay worksA timing relay is a relay in which a certain amount of time must pass through a certain amount of time after the input action signal is added (or removed) to produce a trip (or contact action). An electrical component used on a lower voltage or lower current circuit to turn on or off a circuit with a higher voltage and a higher current. At the same time, the timing relay is also an electrical control device that uses electromagnetic or mechanical principles to achieve delay control.
Relays.
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Anonymous users2024-02-01The relay is mainly divided into the coil part and the contact part, when the coil part is energized, it will produce magnetic force, so as to attract the contact part to move, and the contact engagement is equivalent to the switch being turned on.
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Anonymous users2024-01-31Electromagnetic relays are generally composed of iron cores, coils, armatures, contact reeds, etc. As long as a certain voltage is added to both ends of the first circle, a certain current will flow through the coil, resulting in an electromagnetic effect, and the armature will overcome the tensile force of the return spring under the action of electromagnetic force attraction to attract the core, thereby driving the dynamic contact of the armature to engage with the static contact (normally open contact).
When the coil is de-energized, the electromagnetic suction force disappears, and the armature returns to its original position under the reaction force of the spring, so that the moving contact engages with the original static contact (normally closed contact). In this way, it is engaged and released, so as to achieve the purpose of conduction and cutting in the circuit.
For the "normally open, normally closed" contacts of relays, they can be distinguished as follows: the static contacts that are in the open state when the relay coil is not energized are called "normally open contacts"; Static contacts that are turned on are called "normally closed contacts".
People are asking about gear hobbing machines, not engines, and the answer is not what they asked, hey, does anyone know? Speed.
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