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what is the role of the relay coil?-买球软件

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hits:  updatetime:2019-11-21 11:00:03  【】  【】

what is the role of the relay coil? the role of the relay should be clear. as long as a certain voltage is applied across the coil, a certain current will flow in the coil, resulting in an electromagnetic effect. the armature will be attracted by the electromagnetic force. under the action, the pulling force of the return spring is absorbed to the iron core, thereby driving the movable contact of the armature and the static contact (normally open contact) to be sucked. the function of the coil is to make the upper coil energize to adsorb or bounce the relevant contact point by input voltage, so as to realize the function of mechanically opening/breaking another set of circuits, thereby realizing the desired output, so the coil is the main component of the relay. controlling the conversion of electrical energy into mechanical energy.

a relay is a device that is often used as a switch in a circuit. according to the type of control voltage required for its coil, it can be divided into ac relay and dc relay. the specification of the relay is expressed by the coil control voltage and the contact current. usually, the load current is less than 10a, and the circuit can be directly turned on or off by the contact of the relay. if the load current is too large, it can be used as an indirect control device.


in the central air conditioning control system, the relay is often used as a switch for a power supply circuit such as a compressor, a fan motor, a water pump, or a four-way valve. in use, one end of the relay control coil is connected to the power source, and the other end is connected to the output end of the control component. through the output control signal of the control component, a potential difference is generated across the relay control coil and a current loop is formed to generate an electromagnetic force. under the action of the electromagnetic force and the inherent elastic force of the relay reed, the relay contacts are pulled or released, thereby turning on or off the circuit of the electrical load power supply to control the operation or stop of the related equipment.

main effect:
the principle of electromagnetic is used to realize the conversion of electric energy into mechanical energy to realize the control. the coil and the armature inserted in the coil constitute an electromagnet, and the magnetic force generated by the energization of the coil causes the armature to mechanically move, and drives the contact to complete the circuit. work to achieve the desired output, so the coil is the main component of the relay. since the current through the coil is small, the current or voltage controlled by the contact is high. this allows small currents or small voltages to be used to control large currents and high voltages. the purpose of the voltage.
when the relay coil is de-energized, the electromagnetic suction force also disappears, and the armature returns to the original position in the reaction force of the spring, so that the movable contact and the original static contact (normally closed contact) are attracted. this is sucked and released, thereby achieving the purpose of turning on and off in the circuit. for the "normally open, normally closed" contacts of the relay, it can be distinguished as follows: a static contact that is in an open state when the relay coil is not energized, called a "normally open contact"; a static contact that is in an on state it is a "normally closed contact".

we all know the role of relays and coils. in simple terms, the relay coil is an important part of the relay. the relay needs to be coiled for both adsorption and pop-up. the relay must be used with the coil in order to function. what is the role of the relay coil? the content is here, our company is a professional relay manufacturer. if you want to know more relay knowledge, please pay attention to xinfufu.


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automotive relays and fuses have a common feature, both for safety, and the lack of understanding of circuit components, so some people are not very clear about the difference between the two. everyone can distinguish in appearance, and more is not understanding the principle of action. let me talk about the difference between car relays and fuses. an automotive relay is an electrical control device that is an electrical device that causes a predetermined step change in the controlled output quantity in an electrical output circuit when the change in the input amount (excitation amount) reaches a prescribed requirement. it has a control system (also known as an input loop) and a controlled system (also known as an output back)

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