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The function of intermediate relay
The intermediate relay has the functions of amplification, isolation and protection in the control circuit, including: amplifying weak signals to control larger current loads; providing electrical isolation to prevent control signals and loads from interfering with each other; protecting loads from overcurrent, overvoltage or Short circuit damage. If you want to know more about relays, you can read the articles below this topic.
The function of intermediate relayThe intermediate relay has the functions of amplification, isolation and protection in the control circuit, including: amplifying weak signals to control larger current loads; providing electrical isolation to prevent control signals and loads from interfering with each other; protecting loads from overcurrent, overvoltage or Short circuit damage.
What is the function of electromagnetic relayAn electromagnetic relay is an electromagnetic switch. The magnetic field generated when the coil is energized pulls the armature and drives the contacts to change states, thereby realizing the on-off or switching of the circuit. The main functions include isolation, amplification, switching and protection, and are widely used in fields such as power systems, industrial control, automotive electronics and household appliances.
What is the principle of electromagnetic relayThe principle of the electromagnetic relay is: 1. The electromagnetic relay is composed of a coil and an iron core; 2. When enough current is passed through the coil to reach the pull-in current threshold of the relay, the iron core is acted upon by sufficient magnetic force and is attracted to move in the direction of the coil. , causing the contacts of the relay to close; 3. When the current in the coil is not enough to maintain the pull-in state of the relay, the iron core loses its magnetic force and returns to the original position, and the contacts return to the open state.
What is a relay used to control a circuit?A relay is an automatic electrical appliance that controls the "on" or "off" of a circuit based on external input signals; a relay is an electrical control device that switches on the electrical output circuit when the input changes meet specified requirements. An electrical appliance that causes a predetermined step change in the controlled quantity.
The difference between plc control system and relay control systemThe main differences between PLC and relay control systems are: Working principle: Relays are based on electromagnetic principles, while PLC uses programmable computer components. Programming: Relays are wired through physical connections, while PLCs use programming software. Flexibility: Relays have poor flexibility, while PLCs have high flexibility and can easily adjust control functions. Cost: The cost of relays is lower, and the cost of PLC is higher. Application areas: Relays are suitable for simple small systems, and PLCs are suitable for complex large systems.
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